Andrés R. Vindas Meléndez
@arvm.bsky.social
Mathematician & Educator | Assistant Professor at Harvey Mudd College
A lovely preprint by Ben Braun et al. on Ehrhart h*-distributions. #Combinatorics #LatticePolytopes #MathSky arxiv.org/abs/2607.15886
¡Hola a todos en Costa Rica! Charla pública: "La Forma de lo Posible" con Federico Ardila. No requiere conocimientos previos. ¡Además habrá música! ¿Cuándo?: 5 de agosto, 2026 | 5 PM ¿Dónde?: Universidad de Costa Rica, Sede Rodrigo Facio (Auditorio de Derecho) ¡No se lo pierdan, nos vemos allá
#MathSky: Is it okay to email a copy of one of my papers to an editor of a journal to ask if they think it might be a good fit before submitting it to that journal?
RIP, Richard Tapia! I recall his recounting of his mother's teachings & I hope that I can continue to live by them, just as he did: 1) Be proud; 2) Believe that you can (sí se puede); 3) Demonstrate good work habits; 4) Strive for global excellence. Richard's testimonio: shorturl.at/7KYjK #MathSky
What journals do you recommend/like for publishing mathematics research with undergraduates? #MathSky
#HMC #ComputerScience professor Lucas Bang has received the 2025 Undergraduate Research Faculty Mentoring Award from the #CRA Education Committee for his exceptional work with undergraduate students including mentorship, research and graduate school guidance. Read more at uqr.to/lb-cra.
From Feb. 27–28, the #InnovationAcceleratorLab for Data Science and Social Impact will be hosting the Driving the Impact of Data Science (DIoDS) conference at #HMC. The #DIoDS conference will explore how #DataScience can be leveraged responsibly to serve society. More info at uqr.to/2627h.
I got my first “I f@#*ing hate math” of the year from someone who asked what I do for a living 🙃 Happy new year! #mathsky
Join us Feb 27-28, 2026 at Harvey Mudd College (@hmc.edu) for the Driving the Impact of Data Science (DIoDS) Conference! We have a wonderful lineup of speakers! There are different ways to contribute! Registration & information in the link below. #mathsky www.hmc.edu/dssi/diods-c...
DIoDS Conference | Data Science and Social Impact | Harvey Mudd College
hmc.edu
The Mathematical Connections Seminar is something I have started and organized since coming to Harvey Mudd. If you’re ever in the area and would love to speak at the MCS, please reach out!
Harvey Mudd College@hmc.edu · 11mo agoAs part of a seminar hosted by HMC's math dept., dept. chair & math prof. Mike Orrison discussed how simple ideas from linear algebra & discrete mathematics can be used to unify different voting procedures, leading to new insights & new questions in voting theory. Photos by Lindsey Sands ’27.
Combinatorics friends and math friends in/near Pittsburgh, I invite you to attend "Combinatorics at the Confluence" July 2026! #MathSky Jul 20-22, Carnegie Mellon University, Pittsburgh, PA, Combinatorics at the Confluence combcon.github.io
Combinatorics at the Confluence • July 20–22, 2026 • Carnegie Mellon University
Conference website for Combinatorics at the Confluence, July 20–22, 2026 at Carnegie Mellon University, Pittsburgh.
combcon.github.io
HMC mathematics professor @arvm.bsky.social has received an NSF grant that will fund geometric combinatorics research. Vindas Meléndez & his students will collaborate on original problems, many drawn from Ehrhart theory, which studies the properties of polytopes. uqr.to/nsf-gcr.
Hey, it's me :) NSF Grant Funds Geometric Combinatorics Research at @hmc.edu ! #MathSky www.hmc.edu/about/2025/0...
NSF Grant Funds Geometric Combinatorics Research at Harvey Mudd College | Harvey Mudd College News | Harvey Mudd College
hmc.edu
Happy to have had friends and colleagues from Harvey Mudd, Pomona College, and Cal Poly Pomona over at my house to welcome my friend, Federico Ardila, to the area!
If you're in the Los Ángeles area, join us at @hmc.edu for this year's Moody Lecture on September 16! This year's speaker is my dear friend and mentor, Federico Ardila-Mantilla. For more information: www.hmc.edu/mathematics/... #mathsky
Friends, the mathematics department @hmc.edu is looking to hire a new tenure-track operations researcher who would feel at home in our department. Please spread the word: math.hmc.edu/tenure-track...
We are hiring in Operations Research at @hmc.edu! If you or someone you know is on the job market, please consider applying: math.hmc.edu/tenure-track...
Tenure Track (Operations Research) – Harvey Mudd College Mathematics
math.hmc.edu
Today was our last day of our research experience and I am extremely proud of my summer research students @hmc.edu! Group one (Tito Cuchilla ‘26, Joseph Hound @claremontgraduateu.bsky.social, Cole Plepel ‘27, Louis Ye ‘27) Group two (Cameron Ake ‘28, Spencer Lewis ‘28, Amanda Louie ‘28)
New preprint announcement! This is my FIRST paper with @hmc.edu students and a @claremontgraduateu.bsky.social grad student! Very proud of this paper and the students who worked with me this summer. “Equivariant volumes of symmetric edge polytopes” arxiv.org/abs/2507.18846
Equivariant volumes of symmetric edge polytopes
The symmetric edge polytope ($\mathrm{SEP}$) of a finite simple graph $G$ is a centrally symmetric lattice polytope whose vertices are defined by the edges of the graph. Among the information encoded ...
arxiv.org
ok i am aggressively not a sports person, but this story by @dodecalemma.bsky.social is so cool! and the graphics were fun to work on :) www.scientificamerican.com/article/the-...
The Surprising Math and Physics behind the 2026 World Cup Soccer Ball
Here’s how the new tetrahedron-based design for the “Trionda” soccer ball may affect next year’s big game
scientificamerican.com
What is your favorite shape & why? For HMC math prof @arvm.bsky.social it's a permutahedron, a symmetrical, convex polytope that exhibits many special properties. Read more about Vindas Meléndez's favorite shape & the key it holds to big mathematical mysteries on @sciam.bsky.social. uqr.to/arvm-sm.
Yuan Zhou talks at the #mip2025 about how to estimate the solid angle of d-dimensional cones, which corresponds to the proportion of Rd occupied by them, and which does not has a known closed formula for d > 3. 1/N
Seems like today was a good day to be too busy to check social media during work hours
#MathSky there's a new online open-access (and free) journal for mathematics and fiber arts: Interlace. Now accepting manuscripts! Editors-in-Chief: sarah-marie belcastro and Carolyn Yackel. 🧶 www.interlace-journal.org
<em>Interlace</em> home page
Interlace: A Journal of Mathematics and Fiber Arts
interlace-journal.org
Happy Star Wars day! May the Fourth be with you! foxtrot.com/2025/05/04/a...
A New Definition of Pain
FoxTrot by Bill Amend | May 4, 2025
foxtrot.com
New release of 4ti2, the package for algebraic, geometric and combinatorial problems on linear spaces. This is a maintenance release with no new features. github.com/4ti2/4ti2/re... #FOSS #MathSky
Release Release_1_6_11 · 4ti2/4ti2
What's Changed .github/workflows/ci-sage.yml: Update, use passagemath, remove cygwin by @mkoeppe in #45 Modernize the build system / drop support for old toolchains by @orlitzky in #44 New Contr...
github.com
New paper with awesome collaborators! "The Ehrhart polynomial of a matroid specializes to the beta invariant" with Anastasia Chavez (SMC), Galen Dorpalen-Barry (Texas A&M), Luis Ferroni (IAS & UniPi), Fu Liu (UC Davis), and Felipe Rincón (QMUL). #mathsky arxiv.org/abs/2504.15518
The Ehrhart polynomial of a matroid specializes to the beta invariant
We show that the linear coefficient of the Ehrhart polynomial of a matroid base polytope evaluated at $t-1$ is equal to, up to normalization, the $β$-invariant of the matroid. This yields a lattice-po...
arxiv.org
HMC mathematics professor @arvm.bsky.social has co-authored a paper on polynomial properties in polyhedral geometry. Read the full article about Vindas Meléndez's paper on the behavior of local h-polynomials on our news page. uqr.to/hmc-arvm.
