Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ ¹ ² ³ °
 

You are not logged in. #1 20071106 02:27:36
Symbols
Hebrew letter Aleph, Used in Mathematics, Number Theory, as in Aleph Null
Partial, pronounced doe Greek letter Delta, Triangle in Geometry Infinity Greek letter Sigma, Sum, Summation Union, in Set theory Intersection, in Set theory Subset, in Set Theory Superset, In Set Theory Parallel Perpendicular Approximately Congruence Proportional to Belongs to, in Set theory Less than or equal to Greater than or equal to Not equal to Not approximately Plus or minus Empty set, containing no elements Character is who you are when no one is looking. #2 20071106 03:45:37
Re: Symbols
Pi, Greek alphabet, denoting the ratio of circumference of a circle to its diameter. Approximately 22/7. Approximately 3.14
Delta, Greek alphabet, denoting a small quantity Vector a Unit vector a Character is who you are when no one is looking. #3 20071106 16:36:43
Re: Symbols
= Alpha, Greek Alphabet, In Physics (Mechanics), denotes acceleration
= Omega, Greek Alphabet, In Physics (Mechanics), denotes angular velocity = Beta, Greek alphabet, In atomics physics, denotes a type of particles, Beta particles. = Gamma, Greek Alphabet, In atomic and nuclear physics, denotes a kind of rays, Gamma rays. Character is who you are when no one is looking. #4 20071106 17:04:47
Re: Symbols
= Greek letter, Tau, in Physics, Mechanics, Torque.
= Greek letter, mu, in Physics, in Electiricty and Magnetism, Permeability. = Greek letter, nu, in Physics, Optics, Refractive Index = Greek letter, eta, in Physics, used to denote coefficient of Viscosity in Hydrodynamics, Hydostatics = Greek letter, Sigma, lower case, in Physics = Greek letter, Omega, upper case Character is who you are when no one is looking. #5 20071106 17:48:28
Re: Symbols
= Root, if no number other than 2 is put inside the symbol, Square root
= Power of, usually. This is not a universal code in mathematics though. = Tetration, in number theory in Mathematics. As in Knuth's uparrow notation. Character is who you are when no one is looking. #6 20071107 23:33:45
Re: SymbolsDo you know what this symbol is? I remember seeing it somewhere, but I don't know what it means. You can delete my post after. #7 20071108 00:48:29
Re: SymbolsI believe that that's used in sets. Why did the vector cross the road? It wanted to be normal. #8 20071111 02:13:45
Re: Symbols
= Angle
= Negation, in Symbolic logic = And, in symbolic logic = Or, in Symbolic logic Last edited by MathsIsFun (20081103 07:16:16) Character is who you are when no one is looking. #9 20071216 22:07:49
Re: Symbols
Up arrow as in Donald Knuth's up arrow notation.
Up arrow as in Donald Knuth's up arrow notation. Chained arrow as in John Conway's chained arrow notation. Character is who you are when no one is looking. #10 20071217 04:35:28
Re: Symbols
: Tensor product
: Direct sum : Direct product "In the real world, this would be a problem. But in mathematics, we can just define a place where this problem doesn't exist. So we'll go ahead and do that now..." #11 20071228 02:16:01
Re: Symbols
: Contains as a member
: Not an element of : much less than : much greater than : congruent to : asymptotic : not equal to : not less than : not greater than : not less than or equal to : not greater than or equal to : not subset : not superset : not similar : not congruent : not approximately equal to : not asymptotic Last edited by MathsIsFun (20081103 07:19:50) Character is who you are when no one is looking. #12 20080312 08:34:21
Re: SymbolsI came across this symbol today as a subscript to L, and it meant luminosity using the sun's as a base  so I'm guessing it means "using the stated base". #13 20081102 16:18:25
Re: Symbols
I believe those are reversed. and = And (corresponding to ) You can shear a sheep many times but skin him only once. #14 20081102 16:28:03
Re: Symbols: Contains as a member : Not an element of You can shear a sheep many times but skin him only once. #15 20081102 22:57:55
Re: SymbolsAll_Is_Number: I think you are right ... does anyone else concur/disagree? "The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman #16 20081102 23:32:23
Re: SymbolsYes, I'd agree with those. Why did the vector cross the road? It wanted to be normal. #17 20081103 00:29:26
Re: SymbolsHow are the symbols accessed? #18 20081103 01:11:00
Re: SymbolsThe symbols are part of the LaTeX language that can be used on this forum. There's a fairly thorough tutorial on LaTeX stickied in Help Me!. You can also click on any LaTeX image (like all the ones in the posts above) to see the code that made it. Why did the vector cross the road? It wanted to be normal. #19 20081103 07:21:03
Re: SymbolsFixed both, thanks All_Is_Number and mathsy "The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman 