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visits member for 1 year, 11 months
seen 12 hours ago

Sep
23
asked Is the induction perfect here?
Sep
16
accepted Prove $\sigma(n)> n+\sqrt n $
Sep
15
asked Prove $\sigma(n)> n+\sqrt n $
Sep
15
comment Violation of IVP of a continuous functions
ya. I have got my answer. Thanks to all of you
Sep
15
asked Violation of IVP of a continuous functions
Sep
14
comment How many terms are in $\sum \alpha_1^{a_1}\alpha_2^{a_2}\cdots \alpha_r^{a_r}\alpha_{r+1}\alpha_{r+2}\cdots \alpha_s$
yes, exactly @whacka
Sep
14
comment How many terms are in $\sum \alpha_1^{a_1}\alpha_2^{a_2}\cdots \alpha_r^{a_r}\alpha_{r+1}\alpha_{r+2}\cdots \alpha_s$
ohh ok , so that should be the actual notion. Fine. I apologise. I didn't know. SO ya, I want to know the answer for the last case.
Sep
14
comment How many terms are in $\sum \alpha_1^{a_1}\alpha_2^{a_2}\cdots \alpha_r^{a_r}\alpha_{r+1}\alpha_{r+2}\cdots \alpha_s$
@whacka I understood. Allow me to answer. (1) Yes, $r$ is fixed. $s$ is also. (2) Secondly, all $a_i$ are also fixed. Lastly, if the sum is not symmetric, well, still I don't have any problem but to have the curiosity how many terms like above will be there. Thanks
Sep
14
asked How many terms are in $\sum \alpha_1^{a_1}\alpha_2^{a_2}\cdots \alpha_r^{a_r}\alpha_{r+1}\alpha_{r+2}\cdots \alpha_s$
Sep
13
comment Determinant of Cauchy matrix
I got it. Thanks @user1551
Sep
13
comment Determinant of Cauchy matrix
The evaluation of the determinant.
Sep
12
asked Determinant of Cauchy matrix
Sep
11
comment How to get characteristic polynomial of adj$(A)$
Beautiful answer indeed
Sep
11
accepted How to get characteristic polynomial of adj$(A)$
Sep
11
answered Prove the sum to n terms of the series
Sep
11
answered Whole number and rational number relationship
Sep
11
asked How to get characteristic polynomial of adj$(A)$
Sep
9
accepted What should be the characteristic polynomial for $A^{-1}$ and adj$A$ if the characteristic polynomial of $A$ be given?
Sep
9
comment What should be the characteristic polynomial for $A^{-1}$ and adj$A$ if the characteristic polynomial of $A$ be given?
And what about adj$A$ for singular $A$??
Sep
9
comment What should be the characteristic polynomial for $A^{-1}$ and adj$A$ if the characteristic polynomial of $A$ be given?
Thank you so much. I didn't noticed that. Please clear my doubt. (1) What about my second attempt? Is it correct? If yes, then will it be equal to the solution in my first attempt? (2) The idea you provided for adj$A$ is really cool. But my question is, in case $A$ is singular, then how to proceed for characteristic polynomial of adj$A$?