Can you name the meanings of these common mathematics symbols? by puckett86

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Common Math Symbols Quiz

by puckett86

Created Mar 2, 2010 in Science
Game Plays 7,163

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	moominpaul:	Mar 4th, 2010 at 01:43 GMT	6 points
	∅ - for me this is diameter. engineers :tut:.

	PaladinWhite:	Apr 5th, 2010 at 15:24 GMT	3 points
	"Approximate" or "approximation" should be accepted for almost equal to.

	puckett86:	Apr 5th, 2010 at 16:49 GMT	1 point
	Approximate is accepted.

	sproutcm:	May 15th, 2010 at 07:04 GMT	12 points
	I kept trying "is a member of" for "is an element of" which I think is a legitimate alternate.

	puckett86:	May 15th, 2010 at 14:52 GMT	0 points
	"is an element" has always been accepted so I'm not sure what the issue is there. I will add "is a member of".

	burghatty:	May 15th, 2010 at 21:48 GMT	2 points
	Great idea for a quiz, but you need to add more alternative phrasings. For the last one, I tried "approximates," "is approximately equal to," "approximately equals," and so on.

	puckett86:	May 15th, 2010 at 22:46 GMT	2 points
	@burghatty Thanks, I accept those now. I actually accept lots of alternates for these, but I can't promise the set is complete yet for each symbol.

	ppirilla:	May 17th, 2010 at 18:48 GMT	6 points
	How about "Del" for the nabla/gradient? That's generally how we read it in physics.

	elmarcodepico:	May 19th, 2010 at 03:14 GMT	0 points
	Are you Professor Puckett?

	mayfan:	Jun 1st, 2010 at 23:49 GMT	0 points
	gahhh... how did I forget my discrete math so quickly? Excellent quiz!

	thedpr:	Jun 19th, 2010 at 19:13 GMT	2 points
	The partial symbol also means boundary when dealing with topological spaces.

	dancastro:	Jul 22nd, 2010 at 23:44 GMT	0 points
	I began to play and only later I noticed that symbols 2 to 7 and 9 of the first column, and 2 and 6 of the second column don't appear (I see only square boxes). Did anyone else have the same problem?

	Burt_Reynolds:	Oct 25th, 2010 at 19:14 GMT	0 points
	In the Uk we call your 'ceiling' the 'roof'...

	rhebus:	Nov 19th, 2010 at 12:06 GMT	7 points
	Asymptotic to is not the same as approximately equal to, and has a different symbol: a single wiggle: A ~ b/c as x->inf.

	gustavpolo:	Apr 13th, 2011 at 16:54 GMT	1 point
	add "element" as an acceptable answer please

	Maya:	Apr 13th, 2011 at 21:12 GMT	0 points
	Should also take "belongs to" or "in". Maybe also consider allowing the LaTeX shortcuts? (like infty instead of infinity)

	julia_christine:	Apr 16th, 2011 at 00:57 GMT	3 points
	for the "there exists" symbol (backwards E) i put "exists" and it was not accepted. i don't understand.

	myb555:	Apr 16th, 2011 at 01:59 GMT	2 points
	My only criticism is to accept more for the "Almost Equal to" symbol. I tried a lot of different variations before time ran out.

	Barbaloot:	Apr 27th, 2011 at 01:37 GMT	1 point
	Damn. Got all but the fish.

	ArnoldLodgehm:	May 5th, 2011 at 13:00 GMT	2 points
	logical equivalence - I think we used to say 'implies and is implied by' or is that different?

	puckett86:	May 8th, 2011 at 15:13 GMT	1 point
	@ArnoldLodgehm Different. Logical equivalence goes both ways - it's the same as "if and only if". Implies only goes one way.

	ArnoldLodgehm:	May 10th, 2011 at 10:50 GMT	0 points
	@puckett86 Thank you for clarifying that for me. A long time since I used it.

	davegabis:	May 30th, 2011 at 21:28 GMT	3 points
	No, I think ArnoldLodgehm is correct-- he didn't say "implies," he's saying "implies and is implied by," which does in fact go both ways (in fact, it's just a synonym for "if and only if.") Also, you should accept "strictly contains" and/or "strict containment" for #5 on the left column.

	Dr_Corndog:	Jun 22nd, 2011 at 20:10 GMT	1 point
	I got "is an element of" just for typing the "in" of "intersection." I think "in" is a little too vague to count for "is an element of."

	ArcticFahx:	Nov 3rd, 2011 at 22:08 GMT	0 points
	Ceiling and Roof should accept the longer versions "greatest integer less than" and "least integer greater than". Yes, I typed out those rather than ceiling/floor first >.>

	crystalsky:	Nov 16th, 2011 at 22:12 GMT	1 point
	Shouldn't "slope" be accepted for gradient?

	kagomeshuko:	Dec 4th, 2011 at 04:45 GMT	1 point
	There are LOTS of ways to say "almost equal to!" I tried things like "about" "about equal" "almost equals" - so many more need to be accepted.