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147pm
  • Member for 11 years
  • Last seen more than a week ago
  • Northern Indiana
29 votes
7 answers
11k views

Please Explain Kuratowski Definition of Ordered Pairs

5 votes
3 answers
2k views

How to symbolically write "there exists at most"

4 votes
1 answer
72 views

Rational function must have polynomials?

3 votes
1 answer
87 views

What really are functions added together?

3 votes
2 answers
242 views

Peano axioms with only sets and mapping

3 votes
1 answer
220 views

SICP: Why does this recursion-based sine approximation work?

2 votes
5 answers
1k views

How do Peano Axioms imply "nextness" with the successor?

2 votes
5 answers
61 views

A more logical approach to a word problem

2 votes
6 answers
355 views

How to write absolute value as a "true" function

2 votes
3 answers
2k views

Greatest common divisor of more than two numbers

2 votes
0 answers
2k views

Math, logic symbol for "instance of"

2 votes
1 answer
493 views

How to turn data into functions

2 votes
1 answer
66 views

ZF Axiom of Extensionality implies unique determination?

2 votes
1 answer
99 views

What is meant by a "Cantorian sense of a graph"?

2 votes
4 answers
111 views

Bound/free variables in $\sum_{k=1}^{10}f(k,n)$

2 votes
4 answers
1k views

Peano axiom of induction with "no junk"

1 vote
1 answer
44 views

Which concept is more general, Cartesian Product or Rule of Product or Direct Product?

1 vote
3 answers
162 views

Peano Induction Axiom [closed]

1 vote
1 answer
652 views

Why is a polynomial also a rational function?

1 vote
1 answer
99 views

Layman symmetry versus mathematical symmetry

1 vote
2 answers
145 views

Set version of Intermediate Value Theorem

1 vote
2 answers
424 views

Relationship between Pythagorean Theorem and leg-hypotenuse lengths

1 vote
1 answer
76 views

Piecewise step function for changing dollar amounts?

0 votes
2 answers
145 views

Set notation for specific cartesian product set?

0 votes
1 answer
233 views

Algebraic treatment of finding a dividend given quotient, divisor, and remainder

0 votes
2 answers
798 views

Exponential growth: deriving the growth factor

0 votes
1 answer
52 views

Simple percentage ratio question using cacao percentages

0 votes
1 answer
57 views

Vakil's treatment of Cartesian products

0 votes
2 answers
72 views

Puzzling Theory of Equations statement

0 votes
1 answer
33 views

Find points on linear line equidistant from third point