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  1. A game problem about turn order based on the game state

    Dec 14, 2025 · About two years ago I came up with this problem and I still can't find the solution, so I need help with it. Dad and his son are ordering a pizza. The pizza arrives and son cuts it …

  2. What is the relationship between SL (n) and SO (n)?

    To add some intuition to this, for vectors in Rn R n, SL(n) S L (n) is the space of all the transformations with determinant 1 1, or in other words, all transformations that keep the …

  3. Prove that the manifold $SO(n)$ is connected

    The question really is that simple: Prove that the manifold SO(n) ⊂ GL(n,R) S O (n) ⊂ G L (n, R) is connected. it is very easy to see that the elements of SO(n) S O (n) are in one-to-one …

  4. How connectedness of $O(n)$ or $SO(n)$ implies the …

    Dec 7, 2024 · From here I got another doubt about how we connect Lie stuff in our Clifford algebra settings. Like did we really use fundamental theorem of Gleason, Montgomery and Zippin to …

  5. Homotopy groups O(N) and SO(N): $\\pi_m(O(N))$ v.s.

    Oct 3, 2017 · I have known the data of $\\pi_m(SO(N))$ from this Table: $$\\overset{\\displaystyle\\qquad\\qquad\\qquad\\qquad\\qquad\\qquad\\quad\\textbf{Homotopy …

  6. Lie Algebra of U(N) and SO(N) - Mathematics Stack Exchange

    Oct 8, 2012 · U(N) and SO(N) are quite important groups in physics. I thought I would find this with an easy google search. Apparently NOT! What is the Lie algebra and Lie bracket of the …

  7. How to find the difference between the son's and mother's age if …

    Oct 23, 2019 · A son had recently visited his mom and found out that the two digits that form his age (eg :24) when reversed form his mother's age (eg: 42). Later he goes back to his place …

  8. orthogonal matrices - Irreducible representations of $SO (N ...

    Sep 21, 2020 · I'm looking for a reference/proof where I can understand the irreps of $SO(N)$. I'm particularly interested in the case when $N=2M$ is even, and I'm really only ...

  9. In a family with two children, what are the chances, if one of the ...

    May 27, 2016 · For example, suppose there is a social science study on 2 child families with at least 1 daughter-- in this situation, about 1/3 of the families will be daughter-daughter, 1/3 will …

  10. Universal covering group and fundamental group of $SO (n)$

    Jan 19, 2016 · There's a bit of a subtlety here that I'm curious about...can the group of deck transformations be realized as a subgroup of the covering space?