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  1. What is infinity divided by infinity? - Mathematics Stack Exchange

    Aug 11, 2012 · One advantage of approach (2) is that it allows one to discuss indeterminate forms in concrete fashion and distinguish several cases depending on the nature of numerator and …

  2. limits - Can I subtract infinity from infinity? - Mathematics Stack ...

    Apr 28, 2016 · $\begingroup$ Can this interpretation ("subtract one infinity from another infinite quantity, that is twice large as the previous infinity") help us with things like …

  3. calculus - Infinite Geometric Series Formula Derivation

    Infinite Geometric Series Formula Derivation. Ask Question Asked 12 years, 2 months ago. Modified 4 years ...

  4. Uncountable vs Countable Infinity - Mathematics Stack Exchange

    As far as I understand, the list of all natural numbers is countably infinite and the list of reals between 0 and 1 is uncountably infinite. Cantor's diagonal proof shows how even a …

  5. elementary set theory - What do finite, infinite, countable, not ...

    Clearly every finite set is countable, but also some infinite sets are countable. Note that some places define countable as infinite and the above definition. In such cases we say that finite …

  6. linear algebra - Definition of Infinite Dimensional Vector Space ...

    Sep 24, 2020 · In the text i am referring for Linear Algebra , following definition for Infinite dimensional vector space is given . The Vector Space V(F) is said to be infinite dimensional …

  7. What exactly is infinity? - Mathematics Stack Exchange

    Georg Cantor formalized many ideas related to infinity and infinite sets during the late 19th and early 20th centuries. In the theory he developed, there are infinite sets of different sizes (called …

  8. mathematical operations with infinity - Mathematics Stack Exchange

    Jan 1, 2021 · Let us follow the convention that an expression with $\infty$ is "defined" (in the extended reals) if: when you replace each $\infty$ with any function/sequence whose limit is …

  9. Example of infinite field of characteristic $p\\neq 0$

    May 11, 2023 · On the other hand, if we had $\overline{\mathbb{F}_p}\subseteq\mathbb{F}_p(T)$, then we would have that there were some $\frac{f}{g}\in \mathbb{F}_p(T)$ such that …

  10. general topology - Why is the infinite sphere contractible ...

    Now, the classifying space of the free-living iso is easily seen to be the infinite dimensional sphere. So now the categorical equivalence between the free-living iso and a terminal …

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