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15
Math.TechQA.Club
2019-09-26 02:02:46
342
Views
About definition of interior, boundary and closure
Published on
26 Sep 2019 - 2:02
#general-topology
#multivariable-calculus
#proof-verification
#definition
108
Views
Is this a typo in the definition of support of a random variable?
Published on
27 Sep 2019 - 19:34
#probability-theory
#definition
69
Views
What is the random variable $Z: \Omega \to \mathbb{R}$ by the symbol $Z= X/Y$?
Published on
27 Sep 2019 - 20:46
#probability-theory
#definition
703
Views
Understanding the definition of row echelon form from Golan.
Published on
27 Sep 2019 - 21:48
#linear-algebra
#matrices
#definition
633
Views
Definition of the tangent space and the differential of a smooth function using chart-functions
Published on
25 Mar 2026 - 14:33
#differential-geometry
#definition
#smooth-manifolds
#tangent-spaces
313
Views
What is the random variable $Z$ by the notation $Z =X/Y$?
Published on
28 Sep 2019 - 7:02
#probability-theory
#notation
#definition
760
Views
Are all sets 'regions'?
Published on
28 Sep 2019 - 9:03
#complex-analysis
#analysis
#logic
#definition
135
Views
Understanding the cases of solutions of a system of linear equations from Golan "Linear Algebra".
Published on
29 Sep 2019 - 0:18
#linear-algebra
#systems-of-equations
#definition
734
Views
What is the difference between 'true' and 'correct'?
Published on
27 Mar 2026 - 12:35
#logic
#definition
#natural-deduction
#sequent-calculus
36
Views
How define the norm of $v+W$
Published on
29 Sep 2019 - 21:13
#functional-analysis
#definition
#normed-spaces
857
Views
Really confused about the relationship between set theory, functions, ZFC, Peano axioms, etc.
Published on
26 Mar 2026 - 6:21
#logic
#set-theory
#definition
#foundations
#peano-axioms
66
Views
If $R[x]=R \oplus \langle x \rangle \oplus \langle x^2 \rangle \oplus \cdots $ is a grading of $R[x]$, and $r \in R$, then where does $rx$ belong?
Published on
25 Mar 2026 - 13:34
#abstract-algebra
#ring-theory
#definition
#graded-rings
58
Views
If every nonempty subset $S$ of $X$ has a largest element, what do we call $X$?
Published on
26 Mar 2026 - 6:13
#elementary-set-theory
#terminology
#definition
#well-orders
122
Views
Usage of the word "model"
Published on
27 Mar 2026 - 23:01
#definition
#model-theory
432
Views
Question on the definition and usage of "fiber derivative"
Published on
01 Apr 2026 - 9:33
#general-topology
#soft-question
#definition
#differential-topology
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