Make sure your post belongs here

Lately there have been a ridiculous amount of off-topic threads put in this subforum, so I want to take the time to remind everyone that this is a very specific subforum meant for advanced algebra only. Basic algebra questions should be placed in the pre-university subforum. If your algebra question isn't part of an assignment or topic from at least a 2nd or 3rd year university course, chances are it shouldn't go here. Also, this is not the generic place to put any advanced question. If you have a question about analysis, please put it there. That's why we have an analysis subforum! If it's about topology, put it there! Again, that's why we have one.

__Cliffnotes__: Only put advanced algebra questions in this subforum. Those who can't follow this simple guideline will be **warned, then infracted**, so please don't do it.

Best,

Jameson

What is advanced algebra?

Most non-mathematicians seem to think that "algebra" means replacing numbers with letters.

Actually, algebra is the study of sets which are structured by one or more binary relations.

If you don't know what a group or a ring or a field is, this is not the place for your post

Re: Make sure your post belongs here

Maybe I am looking in the wrong place but I cannot find the sub-forums for analysis or topology that you refer to. Can you help me?

Re: Make sure your post belongs here

CAN ANYONE PLEASE TELL ME ABOUT

Cauchy–Schwarz inequality

1. WHAT IT MEANS ACTUALLY I KNOW FORMAL DEFINITION BUT I WANA INSIGHT CONCEPT WHY PRODUCT OF INDIVIDUAL VECTORS IS ALWAYS> AND EQUAL THAN INNER PRODUCT

2. SPECIFY THE CASE WHEN PRODUCT OF MAGNITUDES OF IND.VECTORS IS = MAG OF INNER PRODUCT

MAY THIS HELPS ME TO GET INSIGHT CONCEPT

I AM NEW TO THESES FORUMS IF ANYONE CAN EMAIL ME IT WILL BE GREAT FOR ME...

THANKX.

E-MAIL ADRESS:

junaidanwar194@gmail.com

Re: Make sure your post belongs here

It seems to me there's a lot of gray area. For instance, a familiar theorem says that the diagonals of a parallelogram bisector each other. An elementary proof is easy to find, and I assume all of us do this some time in high school. But suppose you want to prove it using vectors. That we might not learn until we take linear algebra. And linear algebra does belong in this forum. I think. Maybe we could use another forum about linear algebra.

I'm working through Norman Wildberger's WildLinAlg videos now (so far as I know, this video series is not used in any credit classes anywhere, but it's a very interesting treatment of the subject). He includes a lecture on 3D geometry. I'm thinking of asking a question about one of his exercises. Since it's part of a linear algebra program, I figure I should post it in this forum. Would I be right to do so?

Re: Make sure your post belongs here

Quote:

Originally Posted by

**zhandele** It seems to me there's a lot of gray area. For instance, a familiar theorem says that the diagonals of a parallelogram bisector each other. An elementary proof is easy to find, and I assume all of us do this some time in high school. But suppose you want to prove it using vectors. That we might not learn until we take linear algebra. And linear algebra does belong in this forum. I think. Maybe we could use another forum about linear algebra.

I'm working through Norman Wildberger's WildLinAlg videos now (so far as I know, this video series is not used in any credit classes anywhere, but it's a very interesting treatment of the subject). He includes a lecture on 3D geometry. I'm thinking of asking a question about one of his exercises. Since it's part of a linear algebra program, I figure I should post it in this forum. Would I be right to do so?

That sounds all right. In the future please ask either a Helper or a Moderator before you post. The Helpers have blue titles and Moderators have green.

Certainly this is not a thread to do so in.

-Dan