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15
Math.TechQA.Club
2026-04-11 14:33:38
399
Views
In understanding the recursive definitions of $+,\cdot$, using the successor function
Published on
11 Apr 2026 - 14:33
#logic
#definition
#recursion
124
Views
What does the notation $\sum_i (A_i \times B_i)$ mean?
Published on
10 Apr 2026 - 23:47
#real-analysis
#measure-theory
#definition
131
Views
Calculating a "max support flux vector sequence"
Published on
12 Apr 2026 - 13:31
#algorithms
#notation
#vectors
#definition
#chemistry
30
Views
Negation of $X_1 = \{ x \in X: \exists y \in Y, (\phi^*)^{-1}\mu_x=\beta\mu_y+\mu,|\beta|>N,\mu\{y\}=0 \}.$
Published on
14 Apr 2026 - 19:05
#real-analysis
#measure-theory
#logic
#definition
#banach-spaces
69
Views
What is a subcoset?
Published on
10 Apr 2026 - 6:49
#abstract-algebra
#group-theory
#finite-groups
#definition
45
Views
Is there a name for endomorphisms satisfying a condition weaker than nilpotence?
Published on
11 Apr 2026 - 4:33
#notation
#definition
#nilpotence
15.2k
Views
Pairwise disjoint or disjoint?
Published on
15 Apr 2026 - 21:04
#elementary-set-theory
#terminology
#definition
86
Views
Understanding the limit definition of a sequence
Published on
09 Apr 2026 - 15:36
#limits
#definition
289
Views
What's the correct way to define a function? (codomain and surjectivity)
Published on
12 Apr 2026 - 10:02
#functions
#discrete-mathematics
#elementary-set-theory
#definition
174
Views
What is the abstract definition of an iteration?
Published on
12 Apr 2026 - 10:33
#reference-request
#category-theory
#set-theory
#definition
#foundations
492
Views
Absolutely improper integrability implies improper integrability
Published on
13 Apr 2026 - 4:00
#complex-analysis
#improper-integrals
#definition
#absolute-convergence
223
Views
Barycentric subdivision definition confusion
Published on
09 Apr 2026 - 2:50
#algebraic-topology
#definition
35
Views
If $Sd : S_*(X) \rightarrow S_*(X)$ is a barycentric subdivision and $q \ge 0$ is an integer, what does $Sd^q$ mean?
Published on
14 Apr 2026 - 12:59
#algebraic-topology
#definition
#homology-cohomology
#homological-algebra
658
Views
Does this theorem/collection of theorems have a name? Or is it just seen as obvious?
Published on
13 Apr 2026 - 5:54
#abstract-algebra
#category-theory
#definition
#universal-algebra
#morphism
91
Views
Question about the definition of the degree of a continuous map $f : S^n \rightarrow S^n$.
Published on
15 Apr 2026 - 2:57
#algebraic-topology
#definition
#homology-cohomology
#homological-algebra
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