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15
Math.TechQA.Club
2026-03-25 17:53:12
228
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Formally describing that the complement of an open set must be closed
Published on
25 Mar 2026 - 17:53
#general-topology
#notation
#definition
202
Views
A question about the math definition of predecessor
Published on
25 Mar 2026 - 7:48
#elementary-set-theory
#notation
#peano-axioms
2.3k
Views
Notation for bijection
Published on
22 Mar 2018 - 13:25
#functions
#notation
402
Views
How to negate a relation in logic?
Published on
25 Mar 2026 - 17:52
#real-analysis
#analysis
#logic
#notation
#definition
147
Views
Abbreviated notation for "elementwise vector variance"
Published on
22 Mar 2018 - 17:33
#notation
32
Views
Notation to remove confusion around some functions of random variables
Published on
22 Mar 2018 - 19:44
#probability
#functions
#notation
#random-variables
34
Views
Notation for a sequence of normal random variables with changing mean and variance.
Published on
25 Mar 2026 - 8:08
#sequences-and-series
#statistics
#notation
#time-series
138
Views
Origin of Evaluation Bar
Published on
26 Mar 2026 - 16:11
#definite-integrals
#notation
#math-history
6.2k
Views
What is the Versus symbol?
Published on
22 Mar 2018 - 20:58
#notation
123
Views
Implication Operation $\rightarrow$
Published on
27 Mar 2026 - 2:32
#logic
#notation
#terminology
55
Views
Is this notation denoting multiplication or addition?
Published on
22 Mar 2018 - 22:46
#abstract-algebra
#group-theory
#proof-writing
#notation
51
Views
How to represent sets of quantities with different units mathematically?
Published on
19 Mar 2026 - 17:23
#notation
#unit-of-measure
682
Views
Usage of the del operator $ \nabla $ as a vector.
Published on
22 Mar 2026 - 13:00
#notation
#vector-analysis
#differential-operators
97
Views
What is meant by $f(x) = [x]$ on $[0, a]$?
Published on
24 Mar 2018 - 0:15
#calculus
#notation
99
Views
How to show that the element is not mapped to anything
Published on
24 Mar 2018 - 17:18
#functions
#elementary-set-theory
#notation
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