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ISSN: 2951-6625
Nº 127 (11 de abril de 2024)
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1) A Message from the IMI Director
Dear Colleagues,
It is a pleasure to inform you that Prof. Per H. Enflo, from Kent State University (USA) and member of the Interdisciplinary Mathematics Institute (IMI) at Universidad Complutense de Madrid (UCM), has just uploaded a detailed version of his 2023 paper containing the solution to the invariant subspace problem in Hilbert spaces (https://en.wikipedia.org/wiki/Invariant_subspace_problem) that was announced in the issue 91 of Boletín del IMI (https://doi.org/10.57037/b-imi.00091). For those interested, the arXiv link is https://arxiv.org/abs/2305.15442
As many of us know, Per is a very active and fruitful collaborator and coauthor of several IMI members and his work in Mathematics has led to new concepts, theories, problems, techniques and results in analysis and other areas (such as Mathematical Biology, Population Dynamics, Human Evolution, Population Genetics and Paleoanthropology).
Prof. Per H. Enflo
From IMI we congratulate Per for his Academic Achievements!
Ángel Manuel Ramos del Olmo
2) Activities from April 11 to 19, 2024
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)
Seminario de Doctorandos
Título: Sistemas Hamiltonianos (super)integrables con simetría de coálgebra y deformaciones cuánticas
Orador: Óscar Carballal Sobrido (UCM)
Fecha: 11 de abril, 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: Periodic dynamics of a charged particle in electromagnetic fields with singularities
Speaker: Manuel Garzón Martínez (ICMAT)
Day: April 18, 2024
Place: Room 209
Hour: 13:00
Organized by: Departamento de Análisis Matemático y Matemática Aplicada and Instituto de Matemática Interdisciplinar (IMI)
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)
4) Other planned activities
Seminario de Análisis Matemático y Matemática Aplicada
Title: Positive solutions for slightly subcritical p-laplacian problems via convexity methods
Speaker: Mabel Cuesta (Université du Littoral Côte d’Opale, Calais, France)
Day: April 25, 2024
Place: 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: A nonlocal semilinear problem in heat conduction with long time memory
Speaker: Tomás Caraballo Garrido (Universidad de Sevilla)
Day: May 9, 2024
Place: Room 209
Hour: 13:00
Organized by: Departamento de Análisis Matemático y Matemática Aplicada, Grupo de Investigación CADEDIF and Instituto de Matemática Interdisciplinar (IMI)
Seminario de Análisis Matemático y Matemática Aplicada
Title: The double commutant property for composition operators on Hardy space
Speaker: Miguel Lacruz (Universidad de Sevilla)
Day: May 28, 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 (extended): March 13th, 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
Viñeta enviada por Ángel Manuel Ramos, Director del IMI y creador de "Calista".
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. 126 of the Boletín del IMI:
The ragged mountain
60% of the square is green.
First draw the square diagonal. From the Pythagorean theorem its length can be deduced as √10. That makes the square side √5 and the total area 5.
The two right triangles along the diagonal are similar because they have the same angles. They have side proportion 1 : 2. The large one has area 2/3 and the small one 1/6. Now the green area is 5/2+2/3-1/6=3.
7) Math Art
(Untitled)
