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15
Math.TechQA.Club
2018-09-25 11:38:05
1.3k
Views
What does “$\prod$” mean?
Published on
25 Sep 2018 - 11:38
#notation
#definition
234
Views
What does semantic entailment even mean, in the context of completeness?
Published on
23 Feb 2026 - 1:20
#logic
#proof-writing
#definition
#propositional-calculus
#hilbert-calculus
328
Views
Objects of the $\mathcal{Pno}$ category?
Published on
25 Sep 2018 - 18:08
#category-theory
#definition
655
Views
Does natural deduction require a non-empty set of premises?
Published on
25 Mar 2026 - 3:07
#logic
#definition
#propositional-calculus
#proof-theory
#natural-deduction
974
Views
Definition of a transitive relation.
Published on
26 Mar 2026 - 6:04
#definition
#relations
509
Views
Fitch system, or alternatives?
Published on
25 Mar 2026 - 1:14
#logic
#proof-writing
#definition
#natural-deduction
#online-resources
238
Views
Reason for choice of the word "asymptotically" stable in Lyapunov stability theory?
Published on
25 Mar 2026 - 6:34
#ordinary-differential-equations
#definition
#control-theory
#stability-in-odes
#stability-theory
640
Views
Why must subbundle be an embedded submanifold?
Published on
27 Sep 2018 - 8:56
#differential-geometry
#definition
#differential-topology
#smooth-manifolds
29
Views
Help in defining a certain equivalence relation
Published on
26 Mar 2026 - 6:03
#definition
#relations
#equivalence-relations
1.3k
Views
Confusion about the definition of analytic and singularity.
Published on
25 Mar 2026 - 6:28
#complex-analysis
#definition
#analytic-functions
#singularity
101
Views
Why do definitions need to be 'proved' to work?
Published on
28 Sep 2018 - 16:18
#definition
35
Views
Matrix property more specific than being triangular -- each next row starts with more zeros.
Published on
28 Sep 2018 - 17:21
#matrices
#definition
519
Views
What is a vocabulary in logic
Published on
26 Mar 2026 - 2:45
#logic
#definition
#model-theory
20
Views
What is $\beta(p_i)$ where $p_i$ is a propositional variable?
Published on
29 Sep 2018 - 17:38
#logic
#definition
#propositional-calculus
2.9k
Views
For complex number z = 3 - 2i, why is Im(z) -2 and not -2i?
Published on
30 Sep 2018 - 15:32
#complex-numbers
#definition
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