Ronald

Questions (239)

 8 Deformation retract and homotopy equivalence 6 The order of a group presentation 6 graphs and homotopy extension property 6 notations of generators and relations 5 The fundamental group of semisimple group orbits

Reputation (1,855)

 +5 Similar matrices +5 Lie subalgebra generated by a subset of a basis of root system +5 Fiber bundle with Euclidean total space and connected fiber +10 Is a subgroup of a fundamental group a fundamental group?

 3 Is it possible to evaluate the value of x+z? 2 Write $-3i$ in polar coordinates. 2 Is a subgroup of a fundamental group a fundamental group? 2 How should I understand $f^{-1}(E):=\{x\in A:f(x)\in E\}$? 1 Prove that in $\mathbb{R}$ $\text{int([0,1])}=(0,1)$

Tags (83)

 3 algebra-precalculus 2 functions 2 algebraic-topology × 33 2 elementary-set-theory 2 fundamental-groups × 5 2 polar-coordinates 2 complex-numbers × 2 1 lie-groups × 89 2 inverse 1 algebraic-geometry × 36

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