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15
Math.TechQA.Club
2026-05-10 12:33:39
76
Views
What does it meant :$4$ and $2(1+\sqrt{5}))$ without Great commone divisor?
Published on
10 May 2026 - 12:33
#elementary-number-theory
#definition
#gcd-and-lcm
267
Views
Why are imaginary numbers defined the way they are?
Published on
14 Apr 2026 - 5:03
#number-theory
#complex-numbers
#definition
63
Views
Is this definition of group isomorphism correct?
Published on
11 Apr 2026 - 18:09
#group-theory
#definition
85
Views
What is the defintion of "H preserves all small products and equalizers"?
Published on
09 Apr 2026 - 17:09
#category-theory
#definition
79
Views
Is a set infinite if there exists a bijection between the topological space X and the set?
Published on
07 May 2026 - 10:05
#elementary-set-theory
#definition
#infinity
228
Views
Uniqueness up to isomorphism?
Published on
13 Apr 2026 - 23:21
#category-theory
#definition
972
Views
Why does SOH CAH TOA hold?
Published on
12 Apr 2026 - 2:57
#algebra-precalculus
#trigonometry
#definition
#proof-explanation
6.2k
Views
What is the definition of a free abelian group generated by the set $X$?
Published on
05 May 2026 - 4:14
#abstract-algebra
#group-theory
#definition
#abelian-groups
#free-abelian-group
928
Views
Cartesian product uniqueness (up to bijection). Need to clarify two questions.
Published on
05 May 2026 - 11:41
#category-theory
#definition
#universal-property
333
Views
Understanding the definition of "preserving limits"
Published on
09 Apr 2026 - 18:01
#category-theory
#definition
111
Views
Understanding products in category theory: When is $H(\prod b_i) = \prod H(b_i) \text{ or } H(\prod b_i) \cong \prod H(b_i)$?
Published on
14 Apr 2026 - 0:31
#category-theory
#definition
#examples-counterexamples
93
Views
Can we talk about the $k$-planes in the product of two projective spaces?
Published on
10 May 2026 - 12:34
#geometry
#algebraic-geometry
#vector-spaces
#definition
#projective-space
5.7k
Views
Definition of Coprime
Published on
02 May 2026 - 18:28
#contest-math
#definition
#real-numbers
#coprime
76
Views
Why this written $\vec{v} \binom{x}{y}= \binom{2}{3}$ is not true in mathematics?
Published on
15 Apr 2026 - 11:00
#geometry
#vector-spaces
#definition
100
Views
Is this $\binom{n}{p}$ for $p>n$ make a sense in mathematics or it is $0$ by convention?
Published on
03 May 2026 - 9:27
#probability
#binomial-coefficients
#definition
#convention
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