Mathematics Stack Exchange
Mathematics Stack Exchange

Questions tagged [online-resources]

This tag is for questions that are asking for online resources in mathematics (references, dictionaries, encyclopaedic collections, online tools, videos and lectures, etc), or asking about the mathematics behind tools and technology found on the internet.

This tag is for questions that are asking for online resources in mathematics (references, dictionaries, encyclopaedic collections, online tools, videos and lectures, etc), or asking about the mathematics behind tools and technology found on the internet.

When asking about a certain online resource, please add a hyperlink for accessibility.

611 questions
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10 answers

Best Sets of Lecture Notes and Articles

Let me start by apologizing if there is another thread on math.se that subsumes this. I was updating my answer to the question here during which I made the claim that "I spend a lot of time sifting through books to find [the best source]". It…
Alex Youcis
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22 answers

List of Interesting Math Blogs

I have the one or other interesting Math blog in my feedreader that I follow. It would be interesting to compile a list of Math blogs that are interesting to read, and do not require research-level math skills. I'll start with my entries: Division…
Giuseppe Accaputo
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171
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4 answers

Overview of basic results about images and preimages

Are there some good overviews of basic facts about images and inverse images of sets under functions?
Martin Sleziak
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151
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19 answers

Online tool for making graphs (vertices and edges)?

Anyone know of an online tool available for making graphs (as in graph theory - consisting of edges and vertices)? I have about 36 vertices and even more edges that I wish to draw. (why do I have so many? It's for pathing in a game) Only tool…
f20k
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144
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10 answers

Are mathematical articles on Wikipedia reliable?

I know that Wikipedia gets a bad rap, and it seems like some teachers of mine have nothing better to do in class than harp on about the Great Academic Pastime of calling Wikipedia untrustworthy, but let's face it - Wikipedia is probably the single…
user140943
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135
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22 answers

List of interesting math podcasts?

mathfactor is one I listen to. Does anyone else have a recommendation?
Tim
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133
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5 answers

On Ph.D. Qualifying Exams

Where can I find Ph.D. qualifying exams questions.Is there any website that keeps a collection of such problems? I need it for doing some revision of the basic topics. I know of a book but that do not have the full collection.
Koushik
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131
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1 answer

Overview of basic facts about Cauchy functional equation

The Cauchy functional equation asks about functions $f \colon \mathbb R \to \mathbb R$ such that $$f(x+y)=f(x)+f(y).$$ It is a very well-known functional equation, which appears in various areas of mathematics ranging from exercises in freshman…
Martin Sleziak
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126
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9 answers

Learning Lambda Calculus

What are some good online/free resources (tutorials, guides, exercises, and the like) for learning Lambda Calculus? Specifically, I am interested in the following areas: Untyped lambda calculus Simply-typed lambda calculus Other typed lambda…
Noldorin
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106
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19 answers

Chatting about mathematics (with real-time LaTeX rendering)

Do you know about some tools which can be used for online chat about mathematics? In particular, I am interested in software which would be able to render LaTeX formulas. (Since LaTeX is probably the fastest possibility to type mathematics.) Have…
Martin Sleziak
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96
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2 answers

GRE Subject Test - Past Papers, Books, Advice

This is not for the Maths part of the General GRE. This is for the GRE Subject Test in Maths. Feel free to add or comment. How do I know the definition of rings or of anything on the GRE given that definitions can vary? What does the subject GRE…
BCLC
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71
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1 answer

Overview of basic results on cardinal arithmetic

Are there some good overviews of basic formulas about addition, multiplication and exponentiation of cardinals (preferably available online)?
Martin Sleziak
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54
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14 answers

What book can "bridge" high school math and the more advanced topics?

I love math and would like to know more of it. However, whenever I try to pick up a book on "advanced" mathematical topics, I often have a hard time understanding some of the terms and symbols right from the beginning, like ∑ and ∫ and…
Joshua Carmody
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52
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11 answers

Video lectures on Real Analysis?

One of the most annoying gaps in my math education is Real analysis. I tried hard, but all I could find are either Harvey Mudd College lectures or MathDoctorBob. The latter are too short and the former are in horrendous format, I can barely make…
Alex
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51
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2 answers

How to start a math blog?

I'd like to start a blog where I can write mathematics related notes. The intended audience is mainly myself, but I don't mind it being available for public viewing. I'd like to keep setting up, installation, etc. down to the bare minimum, and…
Evan Aad
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