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ISSN: 2951-6625
Nº 121 (22 de febrero de 2024)
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1) A Message from the IMI Director
Dear Colleagues,
It is a pleasure to introduce you to a new collaborator, author of the comic strip that you may see below in "La viñeta matemática" section.
Jono Hey
In 2012, Jono set himself the challenge of explaining something about the world in a daily sketch. Over a decade later, he's still chipping away (now weekly) one sketch at a time. He's lived in Europe and the U.S., working across academia, design, product development, entrepreneurship, strategy and engineering and helping create two successful companies. He holds a Ph.D. from UC Berkeley and a master's from the University of Bath. Sketchplanation's diversity draws from all these experiences and is now available in a book: Big Ideas Little Pictures.
I hope you enjoy his comic strips.
Thanks a lot Jono!
Ángel Manuel Ramos
2) Activities from February 22, 2024 to March 1, 2024
Curso de Postgrado
Programa de doctorado en investigación matemática
Título: Matemática "fuzzy": Topología "fuzzy"
Profesor: Francisco Gallego Lupiáñez (UCM)
Fecha: Jueves, del 8 de febrero al 18 de abril, 2024
Lugar: Seminario 238
Hora: 12:00-13:00
Organizado por: Departamento de Álgebra, Geometría y Topología, y el Instituto de Matemática Interdisciplinar (IMI)
Seminario de Doctorandos
Título: Indecidibilidad del gap espectral
Orador: Laura Castilla Castellano (UCM)
Fecha: 22 de febrero, 2024
Lugar: Seminario Alberto Dou (209)
Hora: 17:00
Organizado por: Facultad de Ciencias Matemáticas UCM y Red de Doctorandos UCM, con la colaboración del Instituto de Matemática Interdisciplinar (IMI)
Seminario de Análisis Matemático y Matemática Aplicada
Title: On the gradient problem of C. E. Weil
Speaker: Zoltán Buczolich (Eötvös Loránd University, Budapest)
Day: February 26, 2024
Place: Room 222
Hour: 13:00
Organized by: Departamento de Análisis Matemático y Matemática Aplicada and Instituto de Matemática Interdisciplinar (IMI)
Ciclo de conferencias del IMI-DSC
Title: A linear model for freight transportation
Speaker: Alfredo Valencia Toledo (Universidad Nacional San Antonio Abad del Cusco, Perú)
Date: 27 de febrero, 2024
Place: Seminario Sixto Ríos (215)
Hour: 17:00
Organized by: Instituto de Matemática Interdisciplinar (IMI) y Departamento de Estadística e Investigación Operativa
Seminario de Análisis Matemático y Matemática Aplicada
Title: Generating operators between Banach spaces
Speaker: Miguel Martín Suárez (Universidad de Granada)
Day: February 29, 2024
Place: Room 222
Hour: 13:00
Organized by: Departamento de Análisis Matemático y Matemática Aplicada and Instituto de Matemática Interdisciplinar (IMI)
J. Ildefonso Díaz, A. V. Podolskiy, T. A. Shaposhnikova. Unexpected regionally negative solutions of the homogenization of Poisson equation with dynamic unilateral boundary conditions: critical symmetric particles. Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas 118, 9. 2024. https://doi.org/10.1007/s13398-023-01503-w
J. López-Gómez, E. Muñoz-Hernández. A robust multiplicity result in a generalized diffusive predator-prey model. Advances in differential equations, volume 29, 5-6, pages 437-476. 2024. https://doi.org/10.57262/ade029-0506-437
4) Other planned activities
Seminario de Análisis Matemático y Matemática Aplicada
Title: Discrete Exterior Calculus Method. Application to the Resolution of Partial Differential Equations
Speaker: Rubén Carrillo Fernández (UCM)
Date: March 7, 2024
Place: Seminario Alberto Dou (Room 209)
Hour: 13:00
Organized by: Departamento de Análisis Matemático y Matemática Aplicada and Instituto de Matemática Interdisciplinar (IMI)
Seminario de Análisis Matemático y Matemática Aplicada
Title: BVPs vs. periodic problems through different topological methods
Speaker: Eduardo Muñoz Hernández (UCM)
Day: April 11, 2024
Place: Room 209
Hour: 13:00
Organized by: Departamento de Análisis Matemático y Matemática Aplicada and Instituto de Matemática Interdisciplinar (IMI)
EACA2024 Conference
El Escorial (Madrid) from June 24 to 26, 2024
Satellite conference of the 9th European Congress of Mathematics ECM2024 to be held in Seville
The topics of this event include, but are not limited to:
• Effective Methods in Algebra, Analysis, Geometry and Topology.
• Algorithmic Complexity.
• Scientific Computation by means of Symbolic-Numerical Methods.
• Symbolic-Numeric Software Development Analysis.
• Specification, Design and Implementation of Symbolic Computational Systems.
• Applications to Science and Technology.
Everyone doing research and/or applications around the topics of the meeting is welcomed to participate by sending a contribution through easychair: https://easychair.org/conferences/?conf=eaca2024
Contributions should present recent and original research work.
Important dates: Abstract submission opening: February 26th, 2024. Abstract submission deadline: March 6th, 2024. Abstract acceptance communication: April 19th, 2024. Deadline for early registration: May 6th, 2024. Late registration: from May 7th, 2024.
More information on the web of the Conference https://eventos.ucm.es/104844/section/46411/eaca2024.html
EACA2024 Conference is organized by the Spanish “Red Temática de Cálculo Simbólico, Álgebra Computacional y Aplicaciones” (EACA Network on Symbolic Computation, Computer Algebra and Applications), and the Interdisciplinary Mathematics Institute (IMI).
5) La viñeta matemática
Comic strip sent by Jono Hey and used with permission.
6) Math Puzzle
Puzzle sent by Kjartan Poskitt.
The solution will be provided in the next issue of Boletin del IMI.
Solution to last week's Math Puzzle, sent by Rik Tangerman and published on issue No. 120 of the Boletín del IMI:
Spider-Man: Solution
The circle area is 5π.
First, construct the angles α and β subtended at the circumference by the given chords. It is quite easy to see from the triangle interior angle sum that α+β=45°.
Now rotate the short chord all the way along the circle until it sits next to the longer chord. Their total angle subtended at the circumference is still 45°. Because they form a cyclic quadrilateral, the angle between the chords must be 135°.
From the Inscribed angle theorem it follows that the angle subtended at the centre is 90°. The combined chord HL therefore has length r√2. Applying the cosine rule in triangle HLF gives 2r2=4+2-√2cos(135)=10. The circle area follows.
7) Math Art
Saturno
