Mathematical definition of infinity
43309
What exactly is infinity?
54847
Definition of the Infinite Cartesian Product
94433
Rigorous underpinnings of infinitesimals in physics
78576
How to write “there exists an infinite number of”?
21670
Why does an infinite limit not exist?
132831
A circle with infinite radius is a line
56103
Is the universe finite or infinite?
145105
What is the sum of all the Fibonacci numbers from 1 to infinity.
54262
When are infinities okay?
135007
What does it mean to say image is formed at infinity?
20680
Does infinity exist in physical systems?
31889
The limit as $n$ approaches infinity of $n(a^{1/n}-1)$
135222
What are the consequences if Axiom of Infinity is negated?
22423
Which infinity is meant in limits?
19777
Defining "Countably Infinite"
102202
The smallest infinity and the axiom of choice
139574
What is mathematical existence?