User talk:D.Lazard

Safe Primes, in RSA

Ok, let's try to discuss here: https://en.wikipedia.org/wiki/Talk:RSA_(cryptosystem)#Safe_Primes,_in_RSA_Key_Generation No "reliable sources" are needed here. Here you just need to think with your own head. This is math. In any case, I do not owe you anything, and I do not demand anything from you.

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Algebraic equation edit

Hey I cant understand meaning of the sentence you added on the page algebraic equation can you please simplify or explain me meaning I would be great :-) Prankher31 (talk) 03:16, 23 January 2021 (UTC)

I did not add recently anything to Algebraic equation. I have just reverted an edit that makes the phrasing worse. Nevertheless, I have edited the sentence for clarifying it. D.Lazard (talk) 09:09, 23 January 2021 (UTC)

Can you please explain that sentence please!? Prankher31 (talk) 12:36, 23 January 2021 (UTC)

So is algebraic equation a super set in which polynomial equation is sub set? Prankher31 (talk) 15:35, 23 January 2021 (UTC)

No, for some authors "algebraic equation" and "polynomial equation" are synonymous, while, for others, "polynomial equation" is a more general concept than "algebraic equation". In other words, for these authors, an algebraic equation is a polynomial equation, but the converse is not always true. Nobody considers the set of all algebraic equations or the set of all polynomial equations. D.Lazard (talk) 15:53, 23 January 2021 (UTC)

I have edited the page algebraic equation one more time just see is it correct? Prankher31 (talk) 01:53, 24 January 2021 (UTC)

Page equation

Hey in sub topic algebraic equation of page equation there it was written that algebraic equation is either P=0 or P=Q which is not true because algebraic equation is of form P=0 and is also confirmed by user Jochen Bughardt Prankher31 (talk) 01:56, 24 January 2021 (UTC)

Difference between algebraic equation and polynomial equation

X^(1/3) + Y^(1/3) = 0 It is which type of equation algebraic or polynomial equation? Prankher31 (talk) 02:08, 24 January 2021 (UTC)

I was wrong don't worry to reply me :-) Prankher31 (talk) 02:33, 24 January 2021 (UTC)

Regarding deletion of line

Why is use of writing last sentence which you edited when it is clearly written above that polynomial equation refers to multi variate. Have you written for those people who consider polynomial and algebraic equation synonyms. SORRY TO DISTURB Prankher31 (talk) 09:48, 24 January 2021 (UTC)

This is not the place for discussing the content of a specific article. This must be done on the talk page of this article. This allows other editors to give their opinion in case of a disagreement between two editors. In any case, when you have concerns with some formulation in some article you must be much more specific, in order that everybody can understand the problem (here, I ignore to what "deletion of a line" refers, and to which article you refer, as I have recently reverted your edits of two different articles).

By the way, it seems that you are editing and discussing articles on subjects that you have just learnt in Wikipedia. This is not the way to proceed. If some formulation seems confusing, and you are not sure of the right way of fixing it, set the problem on the talk page for allowing more competent editors to fix it. If you do not understand some mathematical content, or you disagree with it, look on textbooks on the subject for learning it or checking whether Wikipedia formulation agrees with the common usage. In any case, Wikipedia is not a textbook, and is not a place for being taught. D.Lazard (talk) 10:24, 24 January 2021 (UTC)

First no body replies in talk page and second that line is creating confusion with other line at top of it Prankher31 (talk) 13:33, 24 January 2021 (UTC)

Please just last thing I want to ask

(Say just say Yes or No am I correct or not) Some people consider polynomial equation means it involves multivariate and algebraic equation means univariate. And some people consider polynomial and algebraic equation as same. I KNOW THIS IS NOT THE PLACE TO DISCUSS THESE THINGS BUT PLEASE Prankher31 (talk) 10:30, 25 January 2021 (UTC)

The answer is in the article, and detailed in section "Terminology". If you are not able to understand the English phrasing, I cannot be of any help to you. D.Lazard (talk) 10:55, 25 January 2021 (UTC)

(I just want to keep it short I have already irritated you) See in article you talked about most authors who consider polynomial equation as multivariate and algebraic equation as univariate but later you again said the following line "In the case of several variables (multivariate case), the term polynomial equation is usually preferred to algebraic equation." So confusion for me is this Prankher31 (talk) 13:42, 25 January 2021 (UTC)

Again let "you" in message be "author" Prankher31 (talk) 13:43, 25 January 2021 (UTC)

I understood thanks :-) Prankher31 (talk) 13:50, 25 January 2021 (UTC)

Change of basis

About the article change of basis: it's not true that a real symmetric matrix can be changed by an orthogonal change-of-basis matrix to have only 0, 1, and −1 on the diagonal. You can diagonalize it by such a matrix (and that fact is called the (real) spectral theorem), but that's all. Note that for an orthogonal matrix P, P^TBP is the same thing as P^-1BP. So the diagonal entries of the resulting diagonal matrix are exactly the eigenvalues of the original matrix (hence not just 0,1,-1). Could you correct the article on this point? BTotaro (talk) 00:37, 3 February 2021 (UTC)