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15
Math.TechQA.Club
2026-04-16 17:21:05
99
Views
$f : M \longmapsto N \hspace{0.1cm} C^{\infty}$ if dim $M > $dim $N$ then $f$ can't be injective
Published on
16 Apr 2026 - 17:21
#manifolds
#differential-topology
#smooth-manifolds
#manifolds-with-boundary
573
Views
What books would you recommend to understand gauge theories?
Published on
14 May 2026 - 21:31
#differential-geometry
#differential-topology
#physics
#gauge-theory
161
Views
Relation between Morse number and Heegaard number
Published on
16 Apr 2026 - 1:41
#general-topology
#differential-topology
#morse-theory
63
Views
Smooth identification of the complement of a disk
Published on
12 Apr 2026 - 20:38
#general-topology
#manifolds
#differential-topology
#smooth-manifolds
#compact-manifolds
110
Views
Degree of the map $\mathbb{C} \times \mathbb{R} \longmapsto \mathbb{C} \times \mathbb{R}$ $: X(z,t) = (z^2,t)$
Published on
17 Apr 2026 - 5:21
#differential-geometry
#manifolds
#differential-topology
#smooth-manifolds
#vector-fields
128
Views
Integral of a $1$-form on $S^1$ with respect to a parametrization (Guillemin and Pollack, 4.4.6)
Published on
15 Apr 2026 - 11:29
#differential-geometry
#differential-topology
#differential-forms
225
Views
Covariant derivative do Carmo help clarification concept
Published on
13 Apr 2026 - 0:52
#differential-geometry
#proof-explanation
#differential-topology
#riemannian-geometry
105
Views
Transitivity of Equivalence Relation of Tangent Vectors on Manifold
Published on
10 Apr 2026 - 22:18
#differential-topology
#smooth-manifolds
526
Views
Why is Killing form $ad$-invariant?
Published on
14 Apr 2026 - 18:45
#differential-topology
#lie-algebras
82
Views
$C^r$ submanifold of $C^r$ manifold
Published on
13 Apr 2026 - 16:58
#differential-geometry
#differential-topology
213
Views
Complex conjugation map is not properly homotopic to the identity map of complex plane
Published on
14 Apr 2026 - 5:38
#algebraic-topology
#differential-topology
#homology-cohomology
#geometric-topology
#de-rham-cohomology
96
Views
Is $(\mathbb{C},+)$ isomorphic to a matrix Lie group?
Published on
11 Apr 2026 - 15:32
#differential-geometry
#differential-topology
#lie-groups
#linear-groups
105
Views
Can one set and use some axioms for calculating intersection forms of manifolds?
Published on
10 May 2026 - 21:59
#algebraic-topology
#differential-topology
#homology-cohomology
#4-manifolds
249
Views
Examples of non-compact 3-dim submanifolds with non-trivial normal bundle
Published on
15 Apr 2026 - 8:08
#differential-geometry
#algebraic-topology
#differential-topology
60
Views
$C^\infty$ Manifolds. Charts.
Published on
16 Apr 2026 - 10:01
#differential-geometry
#manifolds
#differential-topology
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