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15
Math.TechQA.Club
2026-04-13 18:23:17
45
Views
Is there a standard notation for the measure $E \mapsto \mu(E \cap S)$?
Published on
13 Apr 2026 - 18:23
#real-analysis
#measure-theory
#notation
73
Views
What's the purpose of $δx$ here?
Published on
12 Apr 2026 - 15:05
#discrete-mathematics
#summation
#notation
37
Views
how to use the combinations of k elements of n (binomial coefficients) in a formula
Published on
24 Apr 2026 - 16:10
#summation
#notation
#combinations
#binomial-coefficients
81
Views
How to denote square uniquely in Euclidean $\mathbb{R}^2$?
Published on
02 May 2026 - 19:26
#geometry
#notation
#euclidean-geometry
48
Views
does linearly dependency or independency have a symbol?
Published on
14 Apr 2026 - 17:43
#linear-algebra
#notation
117
Views
Notation questions about $A^{r-1}\to A^r, A^n\to M:(1,0,\ldots,0)\to x_1,\ldots,(0,\ldots,0,1)\to x_n$ in Proposition 1.55 concerning free module
Published on
15 Apr 2026 - 21:41
#notation
#proof-explanation
#modules
#exact-sequence
28
Views
Notaional question about the projection map $A^n\to M$ and short exact sequence $A^m\to A^n\to M\to 0.$
Published on
16 Apr 2026 - 4:14
#notation
#modules
#definition
#exact-sequence
50
Views
Question about the maps: $K\to F$ and $L\to F$ in proof of proposition 1.59 concerning finitely presented module.
Published on
15 Apr 2026 - 11:55
#notation
#proof-explanation
#modules
#exact-sequence
39
Views
Notation for expressing a straight chain of $n \choose 2$ identity statements
Published on
13 Apr 2026 - 12:44
#logic
#notation
#predicate-logic
37
Views
Notation for powerset with cardinality condition
Published on
16 Apr 2026 - 20:41
#notation
64
Views
Turnstile followed by 'nothing'
Published on
14 Apr 2026 - 15:23
#logic
#notation
54
Views
What’s the logic behind this labelling of conjugacy classes of groups which seems common?
Published on
15 Apr 2026 - 11:06
#group-theory
#notation
#representation-theory
44
Views
Notation for referring to specific graph colourings
Published on
15 Apr 2026 - 6:05
#notation
#coloring
#polygons
#tiling
#permutation-cycles
34
Views
What does the following notation mean in the enclosed commutative diagram for exact sequence?
Published on
15 Apr 2026 - 13:06
#notation
#exact-sequence
74
Views
Is $k$ in $\textit{Ann}_R(x)=p^k R$ fixed?
Published on
30 Apr 2026 - 0:05
#notation
#modules
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