1990 — 1992 
Hogben, Leslie Heimes, Kenneth 
N/AActivity Code Description: No activity code was retrieved: click on the grant title for more information 
Engineering/Physical Science Second Year Calculus and Differential Equations: a Pilot Project
Students in "fourth semester calculus", differential equations and linear algebra, are benefiting from a revised curriculum that presents the underlying mathematics by introducing physical problems which require this mathematics for their solution.

1 
2004 — 2008 
Hogben, Leslie Peters, Justin 
N/AActivity Code Description: No activity code was retrieved: click on the grant title for more information 
Mathematics and Computing Research Experiences For Undergraduates At Iowa State University
The Department of Mathematics will host the summer program Mathematics and Computing Research Experiences for Undergraduates at Iowa State University. Participants will spend eight weeks working on research projects as part of active research groups at ISU. The projects are in a variety of mathematical areas, representing the diverse research interests of the ISU Mathematics Department, but all utilize computational methods; current projects are described in more detail on the website www.math.iastate.edu/reu/. In addition to carrying out their own research, students will attend a weekly REU Seminar, where they will hear faculty lectures on a variety of mathematical topics and presentations related to attending graduate school. The REU will conclude with a symposium of student reports. Participants will be provided a stipend, accommodation in University student housing, and some travel and meal expenses, and will have the opportunity to participate in social activities for REU students.
Each year twelve students will be selected from the national pool of talented undergraduates. Women and minorities are particularly encouraged to apply and this REU will run concurrently with the ISU Program for Women in Science and Engineering summer internship program and the Alliance program, in which students from historically black colleges come to the ISU Mathematics Department.

1 
2008 — 2009 
Hogben, Leslie Kliemann, Wolfgang (coPI) [⬀] Poon, Yiu 
N/AActivity Code Description: No activity code was retrieved: click on the grant title for more information 
Linear Algebra and Applications Graduate Summer School
ABSTRACT
Principal Investigator: Hogben, Leslie Proposal Number: DMS  0753009 Institution: Iowa State University Title: Linear Algebra and Applications Graduate Summer School: Additional Funding
Linear algebra is a subject of central importance in both mathematics and a variety of other disciplines. It is used by virtually all mathematicians and by statisticians, physicists, biologists, computer scientists, engineers, and social scientists. Just as the basic idea of first semester differential calculus (approximating the graph of a function by its tangent line) provides information about the function, the process of linearization often allows difficult problems to be approximated by more manageable linear ones. This can provide insight into, and, thanks to evermorepowerful computers, approximate solutions of the original problem. The fundamental nature of linear algebra and its many applications make this an ideal theme for a summer program for graduate students.
The 2008 Institute for Mathematics and its Applications (IMA) Participating Institutions Summer Graduate Program on ``Linear Algebra and Applications'' will be held Iowa State University June 29  July 26, 2008. The IMA will pay all costs for the principal speakers and all expenses for up to two students from each of the 40 IMA participating institutions to this Summer Graduate Program. This project will provide support for an 12 additional graduate students from nonIMA US institutions, and salary for a postdoctoral associate who will serve as a mentor to the graduate students. Applications will be taken through the Linear Algebra and Applications Graduate Summer School website http://www.ima.umn.edu/20072008/PISG6.307.25.08/
The program organizers are Leslie Hogben, Wolfgang Kliemann and YiuTung Poon. The the principal speakers and their topics are:
Bryan Shader, University of Wyoming, Linear algebra and applications to combinatorics.
David S. Watkins, Washington State University, Numerical Linear Algebra.
ChiKwong Li, College of William and Mary, Matrix inequalities and equations in science and engineering.
Fritz Colonius, University of Augsburg, Germany, Applications of linear algebra to dynamical systems.
Lectures will be presented in the mornings and students will work in groups in the afternoons, supervised by postdoctoral associate Jason Grout. Each week the students will learn the necessary background to attack current research problems presented at the end of the week.
The Linear Algebra and Applications Graduate Summer School will help to educate future US mathematical scientists. This NSF funding will broaden participation in the summer school and will hence magnify its impact and allow a more diversified group of students to participate, since the organizers will now advertise the summer school broadly also to underrepresented groups of students outside of the IMA participating institutions.

1 
2008 — 2014 
Hogben, Leslie Peters, Justin 
N/AActivity Code Description: No activity code was retrieved: click on the grant title for more information 
Reu Site: Mathematics and Computing Research Experiences For Undergraduates At Iowa State University
The Department of Mathematics will host the summer program Mathematics and Computing Research Experiences for Undergraduates at Iowa State University. Participants will spend eight weeks working on research projects as part of active research groups at ISU. The projects are in a variety of mathematical areas, representing the diverse research interests of the ISU Mathematics Department, including dynamical systems, matrix theory, graph theory and combinatorics, and mathematical biology; all projects utilize computational methods. Current and previous projects are described in more detail on the website www.math.iastate.edu/reu/. The REU will conclude with a symposium of student presentations; each team will also prepare a final report. It is expected that the projects will produce publishable research.
In addition to carrying out their own research, students will attend two short courses on MATLAB and LaTeX and a weekly REU Seminar, where they will hear lectures on a variety of mathematical topics and presentations related to attending graduate school. Participants will be provided a stipend, accommodation in University student housing, and some travel and meal expenses, and will have the opportunity to participate in social activities for REU students. Each year twelve students will be selected from the national pool of talented undergraduates. Women and minorities are particularly encouraged to apply and this REU will run concurrently with the ISU Program for Women in Science and Engineering summer internship program and the Iowa AGEP/Alliance program, in which students from historically black colleges come to the ISU Mathematics Department.

1 
2009 — 2010 
Williams, Roselyn Hogben, Leslie 
N/AActivity Code Description: No activity code was retrieved: click on the grant title for more information 
Research Experiences in the Mathematical Sciences For Undergraduate Faculty (RemsUf) @ American Institute of Mathematics
The Research Experiences in the Mathematical Sciences for the Undergraduate Faculty (REMSUF) Workshop will provide faculty members of undergraduate institutions and universities having limited research activity the opportunity to have a research experience that will lead to research projects with undergraduates. Participants will investigate open problems that are suitable for undergraduate projects at their own institutions. Four research mathematicians who have experience doing research with undergraduate students will lead the workshop and present problems in graph theory, number theory, algebra, and linear algebra. The workshop will begin with lectures and background information on the problems to be investigated. The participants will work in teams on the problems and present their results to the entire group. Numerical experiments and computational investigations are crucial to much of the research done with undergraduates. Training sessions will be provided on the use and applications of the free opensource mathematics software Sage.
The primary goal of the workshop is the engagement of participants in mathematical problems that they can work on with their students; this is not necessarily expected to lead to publishable research. A secondary goal is to forge collaborations among the project leaders and participants that will lead to active involvement of some participants in publishable research through participation in a research group.
The workshop will be held at the American Institute of Mathematics in Palo Alto, CA on July 2024, 2009. Participants will receive full funding for travel, accommodations, and a per diem.

0.906 
2010 
Hogben, Leslie Shader, Bryan 
N/AActivity Code Description: No activity code was retrieved: click on the grant title for more information 
Cbms Regional Conference in the Mathematical Sciences the Mutually Beneficial Relationship of Matrices and Graphs  Summer 2010
An NSFCMBS Regional Conference, "The Mutually Beneficial Relationship of Matrices and Graphs," will be held at Iowa State University July 12  July 16, 2010. Richard Brualdi, the principal speaker, is one of the founders and continuing leaders of the area of Combinatorial Matrix Theory, author of more than 200 papers, and an awardwinning teacher.
The conference will discuss the symbiotic relationship between matrices and graphs and the significant role that they jointly play in pure and applied mathematics, science, and technology. Topics to be discussed include eigenvalues of matrices of graphs (adjacency matrix, Laplacian matrix, etc.), eigenvalues of digraphs, tournaments, sign pattern matrices, the class A(R,S), matrix polytopes, and total nonnegativity.
The conference will equip beginning researchers with the necessary background and involve them in research collaborations in combinatorial matrix theory. Women, underrepresented minorities, graduate students, postdoctoral associates, junior faculty, and faculty at undergraduate colleges will be specifically recruited to participate.

1 
2012 — 2016 
Williams, Roselyn Hogben, Leslie Wilson, Ulrica 
N/AActivity Code Description: No activity code was retrieved: click on the grant title for more information 
Research Experiences For Undergraduate Faculty (Reuf) @ American Institute of Mathematics
The American Institute of Mathematics (AIM) will conduct a series of three annual Research Experiences for Undergraduate Faculty (REUF) workshops during the summers of 2013, 2014, and 2015, and additional activities for participants afterwards to support continuation of research engagement sparked by the workshop. At each REUF workshop four senior mathematicians (leaders) who have experience doing research with undergraduate students will present problems in a variety of areas, after which the participants and leaders will divide into groups and work on the problems; the workshop will conclude with group presentations of each project. Most of the time will be spent doing mathematics, but there will also be whole group discussions about topics such as best practices in undergraduate research led by the organizers. Since numerical experiments and computational investigations are crucial to much of the research done with undergraduates, the workshop will also include instruction in using the free opensource mathematics software Sage. AIM directors will facilitate the management of the workshop, and participants will receive full funding.
The REUF workshop and ongoing activities will provide faculty participants whose undergraduate institutions have limited research activity with a research experience investigating open questions in the mathematical sciences and equip them to engage in research with undergraduate students at their home institutions. In addition, some participants will become involved in longterm research collaborations with other faculty at the workshop. The recruitment efforts for REUF will particularly focus on faculty at minorityserving institutions as well as underrepresented minority faculty at undergraduate colleges. The REUF project will lead to more and better undergraduate research experiences for students of the faculty participants, and greater engagement in mathematical research by the faculty participants, thus expanding and diversifying the mathematical workforce.

0.906 
2015 — 2017 
Hogben, Leslie Horn, Paul Ferrara, Michael Mcallister, Tyrrell Stolee, Derrick (coPI) [⬀] 
N/AActivity Code Description: No activity code was retrieved: click on the grant title for more information 
2015 Rocky MountainGreat Plains Graduate Research Workshop in Combinatorics
The Second Rocky MountainGreat Plains Graduate Research Workshop in Combinatorics (GRWC), which will be held in Ames, IA during June 112, 2015, will involve approximately 35 graduate students, 6 postdoctoral researchers, and more than a dozen faculty members in an intense twoweek collaborative research experience. Participants will work to solve important, relevant problems from graph theory, enumeration, combinatorial matrix theory, finite geometry, and other modern subdisciplines of combinatorics. Students will prepare open problems prior to the workshop under the guidance of faculty mentors from the organizing committee, which consists of faculty from Iowa State University, the University of Colorado Denver, the University of Denver, the University of Nebraska Lincoln, and the University of Wyoming. These problems, presented at the workshop by their proposers or hosted on the workshop's secure problem wiki, will be worked on by small groups of participating students, postdocs, and faculty. For more information about the GRWC, including a detailed description of the workshop format, please see the workshop website at http://sites.google.com/site/rmgpgrwc
The goal of the collaborations at the heart of the GRWC is to produce highquality, publishable research on a variety of topics. Another longerterm goal of the workshop is to help student participants expand their professional research networks. A strong research network is often a crucial part of building a generative and sustainable research program, and establishing these connections at an early career stage can have a longterm positive effect on the quality, impact, and depth of a professional's research portfolio. Participation in the GRWC will allow students to cultivate a large professional network of peers from the combinatorics community with whom they will be able to interact and collaborate throughout their careers. The GRWC will also offer professional development workshops to help students and postdocs prepare for job searches and future careers in academia, industry, or government. This award supports students and postdoctoral researchers only; faculty support is provided by the organizing institutions.

1 
2015 — 2020 
Bergman, Clifford (coPI) [⬀] Hogben, Leslie 
N/AActivity Code Description: No activity code was retrieved: click on the grant title for more information 
Reu Site: Iowa State University Mathematics Reu
The Department of Mathematics will host the summer program Iowa State University Mathematics Research Experiences for Undergraduates three times over five years. The goals of the ISU Math REU are to provide a supportive environment where students can discover the excitement of mathematical research, to increase the number of US citizens including women and minorities receiving Ph.D.s in the mathematical sciences, and to produce high quality research suitable for publication. The REU will conclude with a symposium of student presentations; each team also prepares a final report. Many teams submit papers for publication and most REU students present their work at national conferences. Participants will be provided a stipend, accommodation in University student housing, and some travel and meal expenses, and will have the opportunity to participate in social activities for REU students. Women and minorities are particularly encouraged to apply to this REU.
Each year the program is offered, twelve students will be selected to spend eight weeks working on research projects in teams as part of active research groups at ISU. The projects are in a variety of mathematical areas, representing the diverse research interests of the ISU Mathematics Department, such as matrix theory, graph theory and combinatorics, modeling and numerical analysis, and probability. Current and previous projects are described in more detail on the website http://orion.math.iastate.edu/reu/. The ISU Math REU also serves to develop the next generation of undergraduate research leadership by involving ISU junior faculty in both mentoring and codirecting the REU, welcoming ISU postdoctoral fellows and faculty at area colleges as additional research mentors, and by selecting graduate research assistants who are interested in college teaching.

1 
2016 — 2020 
Hogben, Leslie Donaldson, Brianna 
N/AActivity Code Description: No activity code was retrieved: click on the grant title for more information 
Collaborative Research: Aim & Icerm Research Experiences For Undergraduate Faculty (Reuf) @ American Institute of Mathematics
Enabling more Americans to earn undergraduate and graduate degrees in science, technology, engineering and mathematics (STEM) is important to improving American innovation capabilities. Participating in research as undergraduates improves retention in STEM majors and encourages students to pursue graduate degrees. Faculty at colleges and universities that focus on undergraduate education are critical to this mission, yet in many cases such faculty receive little support to do research with the students they teach or continue their own research, and doctoral programs often fail to train their graduates to mentor undergraduate research. To address this national need, the American Institute of Mathematics (AIM) and the Institute for Computational and Experimental Research in Mathematics (ICERM) will conduct a series of four annual Research Experiences for Undergraduate Faculty (REUF) workshops during the summers of 2016, 2017, 2018, and 2019. Each REUF workshop and ongoing activities will provide a new group of faculty participants at undergraduate institutions that have limited research support with a research experience investigating open questions in the mathematical sciences and equip them to engage in research with undergraduate students at their home institutions.
At each REUF workshop four senior mathematicians (leaders) who have experience doing research with undergraduate students will present problems in a variety of areas, after which the participants and leaders will divide into groups and work on the problems; the workshop will conclude with group presentations of each project. Most of the time will be spent doing research, but there will also be whole group discussions about topics such as best practices in undergraduate research led by the (co)principal investigators, who also meet daily with the leaders. There are opportunities to continue work on the projects started in the workshop, and some participants will become involved in longterm research collaborations with other faculty at the workshop. The recruitment efforts for REUF will target faculty at undergraduate colleges and universities that serve a large proportion of students who are underrepresented minorities, person with disabilities, or first generation college students, as well as faculty who are themselves underrepresented or have disabilities. The REUF project will lead to more and better undergraduate research experiences for the students of the faculty participants, and greater engagement in mathematical research by the faculty participants, thus expanding and diversifying the mathematical workforce.

0.906 
2016 — 2019 
Hogben, Leslie Martin, Ryan (coPI) [⬀] Stolee, Derrick (coPI) [⬀] Young, Michael (coPI) [⬀] Lidicky, Bernard 
N/AActivity Code Description: No activity code was retrieved: click on the grant title for more information 
Collaborative Research: Rocky MountainGreat Plains Graduate Research Workshops in Combinatorics
The Rocky MountainGreat Plains Graduate Research Workshop in Combinatorics (GRWC), will be held in Laramie, WY (2016), Denver, CO (2017) and Ames, IA (2018), building upon successful NSFfunded workshops in 2014 and 2015. Each workshop will involve approximately 39 graduate students and postdoctoral researchers, and 10 or more faculty members in an intense twoweek collaborative research experience. Participants will work to solve important, relevant problems from graph theory, enumeration, combinatorial matrix theory, finite geometry, and other modern subdisciplines of combinatorics. Students will prepare open problems prior to the workshop under the guidance of faculty mentors from the organizing committee, which consists of faculty from Iowa State University, the University of Colorado Denver, the University of Denver, the University of Nebraska Lincoln, and the University of Wyoming. These problems, presented at the workshop by their proposers or hosted on the workshop's secure problem wiki, will be worked on by small groups of participating students, postdocs, and faculty. For more information about the GRWC, including a detailed description of the workshop format, please see the workshop website at http://sites.google.com/site/rmgpgrwc
The goal of the collaborations at the heart of the GRWC is to produce highquality, publishable research on a variety of topics. Another longerterm goal of the workshop is to help student participants expand their professional research networks. A strong research network is often a crucial part of building a generative and sustainable research program, and establishing these connections at an early career stage can have a longterm positive effect on the quality, impact, and depth of a professional's research portfolio. Participation in the GRWC will allow students to cultivate a large professional network of peers from the combinatorics community with whom they will be able to interact and collaborate throughout their careers. The GRWC will also offer professional development workshops to help students and postdocs prepare for job searches and future careers in academia, industry, or government.

1 
2017 — 2020 
Hogben, Leslie Basor, Estelle Conrey, J. Brian Farmer, David Donaldson, Brianna 
N/AActivity Code Description: No activity code was retrieved: click on the grant title for more information 
American Institute of Mathematics Research Conference Center: a Model For Collaboration @ American Institute of Mathematics
The American Institute of Mathematics (AIM) advances the frontiers of mathematical knowledge by fostering collaborations among diverse groups of researchers. AIM has been supported as an NSF Mathematical Sciences Research Institute since 2002, and hosts short, mathematically focused programs that complement the semester and yearlong programs of other NSF institutes. AIM's primary scientific programs are weeklong focused workshops and small research groups called Structured Quartet Research Ensembles (SQuaREs). Approximately 750 mathematicians per year visit AIM for either a workshop or a SQuaRE. Since 2002, AIM has hosted more than 250 weeklong focused workshops in all areas of the mathematical sciences. Three distinctive features of these weeklong workshops are their focused topics, small size (25 to 30 researchers), and structured afternoon work time, including time for research in small groups. The SQuaREs program, introduced in 2007, supports collaborations of 4 to 6 researchers who meet multiple times for weeklong intervals in order to make progress on an ambitious research agenda. The program encourages the development of new and lasting collaborations, particularly between junior and senior researchers, that produce exceptional mathematics. To further support the goals of the scientific programs, AIM has developed a set of webbased tools that enhance collaboration before, during, and after participants' time at AIM. These tools also contribute more broadly to mathematics research through helping disseminate progress to a larger community of interest, and have longterm potential for wider use by the mathematics community. Throughout its history, AIM has also supported a variety of Special Projects, including Research Experiences for Undergraduate Faculty (REUF), a program for undergraduate faculty who want to mentor undergraduate students in research; and the Math Teachers' Circle (MTC) Network, a national outreach program connecting K12 mathematics teachers with research mathematicians. These projects contribute to the broader impacts of AIM's work as an institute and provide opportunities to form partnerships both within and beyond the mathematics community.
During the project period, AIM will host approximately 2,500 mathematical scientists in 60 workshops and 90 SQuaREs that will advance knowledge in a broad spectrum of mathematical areas. Topics of past and upcoming workshops and SQuaREs include the fields and subfields of algebra, number theory, geometry, algebraic geometry, topology, analysis, combinatorics and probability, and applications to mathematical physics, mathematical biology, and to sustainability problems concerned with food, water, and transportation. It is anticipated that these programs will continue their established record of productivity, which during the current grant period has been an average of 2.9 publications resulting from each workshop and 3.7 from each SQuaRE. Broader scientific outcomes of AIM's programs include paving the way for new connections between fields of mathematics and new applications of the mathematical sciences to other areas. AIM's three overarching goals of broadening participation, increasing collaboration, and advancing mathematics produce broad impacts. Participant diversity is an important consideration at every stage of program selection and planning, and extensive effort is dedicated to creating a culture of full inclusion for all participants in each program's research activities. AIM also works to broaden participation in and raise public awareness about the mathematical sciences through Special Projects such as REUF, the MTC Network, and local outreach efforts. Finally, research collaboration tools disseminate the results of AIM programs and also have significant potential to contribute to the infrastructure supporting scientific collaboration more generally.

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