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15
Math.TechQA.Club
2026-04-13 09:54:29
466
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What is the correct definition of the absolute value of $x$, $|x|$?
Published on
13 Apr 2026 - 9:54
#notation
#definition
716
Views
I need to disprove an alternate definition of an ordered pair. Why is $\langle a,b\rangle = \{a,\{b\}\}$ incorrect?
Published on
15 Apr 2026 - 2:14
#elementary-set-theory
#discrete-mathematics
#definition
298
Views
Pushdown automata - definition and definition of $\vdash$
Published on
08 Apr 2026 - 16:26
#definition
#automata
7.9k
Views
Defining the derivative without limits
Published on
10 Apr 2026 - 17:28
#calculus
#limits
#derivatives
#definition
#education
126
Views
Definition of a deterministic Pushdown automaton
Published on
13 Apr 2026 - 22:49
#definition
#automata
159
Views
Formalizing the idea of a set $A$ *together* with the operations $+,\cdot$''.
Published on
12 Apr 2026 - 18:05
#linear-algebra
#terminology
#definition
525
Views
Measure and Outer Measure Definition
Published on
13 Apr 2026 - 19:39
#measure-theory
#definition
69
Views
Legal actions on a PDA and terminology
Published on
14 Apr 2026 - 3:07
#terminology
#definition
#automata
295
Views
Is there an idea of "primeless isomorphism" studied somewhere in finite group theory?
Published on
25 Apr 2026 - 0:59
#abstract-algebra
#group-theory
#finite-groups
#intuition
#definition
2.3k
Views
Question about the definition of a category
Published on
17 Apr 2026 - 13:50
#category-theory
#definition
1.1k
Views
Question about definition of regular projection of a knot
Published on
09 Apr 2026 - 7:59
#definition
#knot-theory
2.6k
Views
Bounded Set: definition
Published on
10 Apr 2026 - 6:20
#real-analysis
#definition
3.9k
Views
What is the meaning of $K/F$ is a cyclic extension?
Published on
13 Apr 2026 - 8:26
#abstract-algebra
#terminology
#field-theory
#galois-theory
#definition
1.1k
Views
Epsilon delta definition: $\lim _{x\to-2} (2x^2+5x+3)=1$
Published on
15 Apr 2026 - 2:07
#limits
#definition
#continuity
124
Views
Exponentation vs Power
Published on
24 Apr 2026 - 16:00
#notation
#definition
#exponentiation
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