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Boletín Nº 182

Boletín del IMI

ISSN: 2951-6625
Nº 182 (10 de julio de 2025)

 
 
1) Palabras del Director
 

Dear IMI members,


This will be the last of the Mirangu puzzles sent by Rik Tangerman, who is now moving to a new career. We express our deep gratitude to Rik for all the delightful puzzles he has offered us, and wish him the best for the future. It is likely that we have to reformulate the puzzle section of el Boletín. In any case, the changes would be implemented after the summer break, in September. The IMI activities do not stop yet, and we will still publish one final issue of el Boletín next week.

Rik Tangerman

 

Gustavo Adolfo Muñoz Fernández

 
 

 2) Other planned activities

 

Congreso en Análisis Matemático y Sistemas Dinámicos

Título: Dynamics and Analysis in Interaction: Quantum, statistical, computational and p-adic challenges
Fechas: 1 al 5 de septiembre de 2025
Lugar: Real Academia de Ciencias Exactas, Físicas y Naturales (RAC)
Organizado por: Proyecto de Investigación "From integrability to randomness in symplectic and quantum geometry", Real Academia de Ciencias Exactas, Físicas y Naturales,  Facultad de Ciencias Matemáticas de la UCM y el Instituto de Matemática Interdisciplinar
 
 
 
 
 
 
 
 
 
 
 
 

 3) New publications

 
A.D. Nguyen, J. I. Díaz. UNIQUENESS AND QUALITATIVE BEHAVIOR OF SOLUTIONS TO A POROUS MEDIUM EQUATION WITH NEWTONIAN POTENTIAL PRESSURE OF NONLINEAR DENSITY FUNCTION. Discrete and Continuous Dynamical Systems Series A, 45(11), pp. 4454-4489. 2025. IF 1.0 Q2 in the cathegory of  "Mathematics" JCR. DOI: 10.3934/dcds.2025063
 
 

 

 4) La viñeta matemática

 
Comic strip sent by Ben Orlin, and used with permission.


 

 5) Math Puzzle

 
Puzzle sent by Rik Tangerman.
 
 
The solution will be provided in the next issue of Boletin del IMI.
 

The folded napkin

Level: Intermediate. 

A square sheet of paper is folded symmetrically from a corner. If the fold length is 4, what is the area of the triangle formed by the other three corners?

 
 
Solution to last issue's Math Puzzle, sent by Kjartan Poskitt and published on issue No. 181 of the Boletín del IMI:

 

 

 

 6) Math Art

 
Math Art sent by Albert P. Carpenter


Hart Dodecahedral Polyknot

 
Instituto de Matemática Interdisciplinar
Universidad Complutense de Madrid
Plaza de Ciencias 3, 28040, Madrid
https://www.ucm.es/imi

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