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15
Math.TechQA.Club
2026-03-25 04:40:47
1.3k
Views
Homotopy type of the diffeomorphism group of the sphere.
Published on
25 Mar 2026 - 4:40
#differential-topology
#homotopy-theory
#diffeomorphism
578
Views
Are these conditions equivalent to the definition of regular coordinate ball?
Published on
26 Mar 2026 - 9:49
#general-topology
#manifolds
#differential-topology
#smooth-manifolds
#geometric-topology
48
Views
A set is a manifold iff a subset of it is a manifold.(p.28 Guillemin & Pollack)
Published on
26 Mar 2026 - 6:34
#general-topology
#differential-geometry
#algebraic-topology
#differential-topology
#geometric-topology
88
Views
Transversality as an extension of the notion of regularity p.28 in Guillemin & Pollack.
Published on
25 Mar 2026 - 6:13
#differential-geometry
#algebraic-topology
#differential-topology
#geometric-topology
#transversality
340
Views
On Grassmann manifold
Published on
23 Oct 2018 - 21:06
#differential-geometry
#differential-topology
249
Views
Exercise 1.5.7 in Guillemin and Pollack
Published on
25 Mar 2026 - 6:10
#differential-geometry
#algebraic-topology
#differential-topology
#geometric-topology
#transversality
94
Views
Existence of solution of a 3-dimensional linear PDE.
Published on
23 Oct 2018 - 23:49
#ordinary-differential-equations
#differential-geometry
#partial-differential-equations
#differential-topology
#partial-derivative
649
Views
Exercise 1.5.5 in Guillemin and Pollack.
Published on
26 Mar 2026 - 6:34
#differential-geometry
#algebraic-geometry
#algebraic-topology
#differential-topology
#geometric-topology
54
Views
Twisty cross notation
Published on
23 Mar 2026 - 9:09
#differential-topology
#smooth-manifolds
#4-manifolds
86
Views
Example 9.6 Tu text on manifolds
Published on
24 Oct 2018 - 16:02
#differential-geometry
#differential-topology
22
Views
Deciding whether a set is a smooth submanifold
Published on
24 Oct 2018 - 19:37
#differential-topology
145
Views
Exercise 1.5.1 in Guillemin and Pollack
Published on
26 Mar 2026 - 8:15
#linear-algebra
#differential-geometry
#algebraic-topology
#differential-topology
#geometric-topology
2.4k
Views
Is the empty function differentiable?
Published on
24 Oct 2018 - 23:20
#calculus
#real-analysis
#functions
#differential-topology
4.2k
Views
Algebraic Topology vs Differential Topology
Published on
25 Oct 2018 - 2:50
#algebraic-topology
#soft-question
#differential-topology
440
Views
Showing a vector field on the unit quaternions is invariant under left translation action
Published on
28 Mar 2026 - 3:30
#multivariable-calculus
#differential-geometry
#differential-topology
#lie-groups
#smooth-manifolds
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