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Results tagged with gr.group-theory
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user 461
Questions about the branch of algebra that deals with groups.
10
votes
1
answer
407
views
Does every set have a rigid self-map?
The question was asked on Mathematics Stackexchange
but has remained unanswered so far.
A self-map is a map $f:X\to X$ from a set $X$ to itself. There is an obvious notion of morphism, and thus of iso …
- 63.9k
11
votes
Galois theory timeline
EDIT. Here is the part of the answer that has been rewritten:
We give below a short proof of the Fundamental Theorem of Galois Theory (FTGT) for finite degree extensions. We derive the FTGT from two …
- 4,416