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Questions designed to generate a "big list" of certain results, examples, conjectures, etc. via many individual answers, each contributing one or a few instances. Such a question should typically be in Community Wiki mode (CW); after asking, please, flag for moderators attention requesting the question to be made CW.

-4 votes

What are the most overloaded words in mathematics?

-ary -ary, as in $k$-ary numeral $s$, refers to the number $k$ of values in the domain $K = \lbrace 0, 1, \ldots, k-1 \rbrace$ that affords the basis of numeration. -ary, as in $k$-ary relation $L$, …
7 votes

Fields of mathematics that were dormant for a long time until someone revitalized them

C.S. Peirce was lecturing on what he called the “laws of information” as early as 1865–1866 and later gave a simple form of logarithmic measure for the information content of a logical constraint. Of …
6 votes

What's your favorite equation, formula, identity or inequality?

Addendum to $e^{i \pi}$ Benjamin Peirce apparently liked this mathematical synonym for the additive inverse of $1$ so much that he introduced three special symbols for $e, i, \pi$ — ones that enable $ …
-5 votes

Papers that debunk common myths in the history of mathematics

Anellis, I.H. (1995), “Peirce Rustled, Russell Pierced : How Charles Peirce and Bertrand Russell Viewed Each Other's Work in Logic, and an Assessment of Russell's Accuracy and Role in the Historiograp …
2 votes

What are some good beginner graph theory texts?

I learned to love graphs and their counting, first from Harary's Graph Theory and later from Harary and Palmer's Graphical Enumeration, or maybe it was more the spirit of their teaching than the lette …
-1 votes

Do you read the masters?

Charles Sanders Peirce — Beginning with volumes 3 and 4 of his Collected Papers and covering pretty much everything he wrote on logic and mathematics that I could get my hands on.
-5 votes

Counterexamples in algebra?

Videque Counterexamples in X Counterexamples in Clifford Algebras
2 votes

Describe a topic in one sentence.

Another favorite of mine … Redundancy is the essence of information.
4 votes

Tools for collaborative paper-writing

People who like MediaWiki or Semantic MediaWiki might look into the facilities at MyWikiBiz. This is a "directory" site that operates on a 2-level model. There are mainspace pages that can be edited …
20 votes

Describe a topic in one sentence.

The bonniest mot I can ever recall — from some graduate algebra course: "Free" is just another word for nothing to do on the left.
-2 votes

Do you read the masters?

Aristotle, “The Categories”, Harold P. Cooke (trans.), pp. 1–109 in Aristotle, Volume 1, Loeb Classical Library, William Heinemann, London, UK, 1938. Aristotle, “On Interpretation”, Harold P. Cooke …
3 votes

Do you read the masters?

Boole, George (1854), An Investigation of the Laws of Thought on Which are Founded the Mathematical Theories of Logic and Probabilities, Macmillan Publishers, 1854. Reprinted with corrections, Dover …
4 votes

Describe a topic in one sentence.

Generating functions are the 19th Century analog of addressable memory.
2 votes

Periods and commas in mathematical writing

The problem is compounded by the following facts: There are different style sheets for different disciplines and even subdisciplines that use mathematics. For example, do you put a punctuation mark …
1 vote

Resources for graphical languages / Penrose notation / Feynman diagrams / birdtracks?

Other sources of possible interest Redfield, J.H. (1927), "The Theory of Group-Reduced Distributions", Amer. J. Math. 49, 433–455. Roberts, D.D. (1973), The Existential Graphs of Charles S. Peirce, …