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Mathematics
Arian Ghasemi's user avatar
Arian Ghasemi's user avatar
Arian Ghasemi's user avatar
Arian Ghasemi
  • Member for 3 years, 9 months
  • Last seen more than a month ago
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5
How to prove $X = \{x\in \mathbb{R} \ : \ x^2 < a \} $ has supremum?
Sep 23, 2022
2
How to be sure about any parameterization?
Jan 21, 2021
2
If $g:X\to Y$ be a one-to-one correspondence and $X$ is finite, then $Y$ is finite too.
Feb 24, 2021
2
Prove that addition under "real numbers" is well defined.
Mar 1, 2021
2
Understanding bijection between $2^X$ and $P(X)$.
Apr 23, 2021
2
Set of all circles in cartesian plane without intersection is denumerable
Jun 25, 2021
2
Placing rooks in a $8\times8$ chess board , Another way
Nov 15, 2021
1
prove $x+1 = 1+x$ using Peano axioms
Feb 25, 2021
1
How to show that this is a bijection?
Mar 15, 2021
1
Can construct a bijection between R - Q and ( (R - Q) ∩ [0,1] )?
Apr 23, 2021