Jérôme JEAN-CHARLES
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Registered User
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Subjects : finite maths , combinatorics, graphs , categories.
I am problem oriented and of the geometric type.
I believe the linguistic-literary side of maths should be put forward in particular as a means to fill the gap between mathematics and general culture.
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Mar 30 |
comment |
Enumerating 0-1 finite boxes without null rays. @Casteels : OK you are right there was a typo the 4 and the 6 where exchanged in front of the powers ^p. |
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Mar 30 |
revised |
Enumerating 0-1 finite boxes without null rays. Exchange coeffs. 6 and 4 inf front of 7^p and 3^p |
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Mar 29 |
asked | Enumerating 0-1 finite boxes without null rays. |
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Mar 3 |
revised |
Difficult examples for Frankl’s union-closed conjecture minor |
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Mar 2 |
revised |
Difficult examples for Frankl’s union-closed conjecture Added a third point C) |
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Mar 1 |
answered | Difficult examples for Frankl’s union-closed conjecture |
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Feb 8 |
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Which finite group is not the automorphism group of some rooted finite trees Thank you very much , there is still an aspect of "density". Do we loose kind of "half" when restricting to (FTAG) FiniteTree-Automorphism -Groups ? |
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Feb 8 |
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Which finite group is not the automorphism group of some rooted finite trees How funny that my context is in fact graph isomorphism and Brendan is the first to answer this. Mysterious or funny ? |
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Feb 8 |
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Why is Set, and not Rel, so ubiquitous in mathematics? Too short and too partial for an answer: I think that functions are on the technical side whereas relation are on the conceptual side. A function (partial) "is" a partition whereas a relation thought as a bipartite graph is much more complicated. A related (no pun) question is that partial functions should be used instead of function. |
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Feb 8 |
asked | Which finite group is not the automorphism group of some rooted finite trees |
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Jan 24 |
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Galois connections @jim It is a detail : in galois.pdf the property is symetric (not reflexive as given). |
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Dec 25 |
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What would you want to see at the Museum of Mathematics? @Todd : I have seen a very nice documentary about professional dancers at the Opéra de Paris ( from Reichenbach ? ) . You see them talk and act (dance) for training and interpreting, yet the "truth" they reach through successive corrections is felt but not understood (unless you are semi professional). So the idea is that people may understand the general aim and the kind of logic used by mathematicians without a proper grasp. |
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Dec 17 |
awarded | ● Good Answer |
