310 reputation
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location Moscow, Russia
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visits member for 1 year, 11 months
seen 6 hours ago

Jun
23
comment Principal ideal ring
@ReneSchipperus Yes.
Jul
18
comment Algebraic structure for the floating-point arithmetic.
Well, nothing could be added to this?..
Jun
3
comment How many ways are there to represent the number $N$?
Ouch, that was a mistake. Fixed it.
Jun
3
comment How many ways are there to represent the number $N$?
But what about the 2nd or the 3rd part? I can try to reformulate these questions(if needed).
Jun
3
comment How many ways are there to represent the number $N$?
Well, that's what I got: rewrote equation $(1)$ in this way: $1091=10(100a_3+a_1)+(100a_2+a_0)$. $x=100a_3+a_1$, $y=100a_2+a_0$. Thus, $1091 = 10x+y. \ \ 0 \leq x \leq 109$. For every $x$ there is only one $y$, so we get $110$ ways to represent $N$.
Feb
23
comment A basis for a vector space
Thank you for your answers and sorry for any inconvenience. My English isn't perfect at all as it is not my native language.
Feb
23
comment solving $\sqrt{3-\sqrt{3+x}}=x$.
Finding the derivative should help to understand a behavior of the function, I think
Jan
14
comment How to prove that a set of logical connectives is functionally complete(incomplete)?
These are vectors of boolean functions
Jan
14
comment How to solve $ x = 5^{1345}\bmod 58$? Fermat's little theorem
Thanks, I got it!