What does the symbol § mean?
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The section sign (§; Unicode U+00A7, HTML entity §) is a typographical character used mainly to refer to a particular section of a document, such as a legal code. It is frequently used along with the pilcrow (¶), or paragraph sign. When duplicated, as §§, it is read as the plural "sections" (§§ 13–21), much as "pp." (pages) is the plural of "p." (page). The sign itself is supposed to have developed from the Hebrew letter gimel (ג). Its usage was similar to paragraphos.
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s,p,d,f are the names of different kinds of electron orbitals.  they correspond to different values for the angular momentum quantum number "l".  \n\ngoing from s -> p -> d -> f and so on means an increase in the electron's angular momentum about the nucleus.  s means the l quantum number is 0; p means l = 1, d means l=2, f means l=3.  \n\nrereading the question, maybe you mean what do the letters stand for?  it has to do with the way electron orbitals are studied, which is via emission spectroscopy.  the names were originally given to describe different kinds of spectral lines and they stand for:  sharp, principal, diffuse, and fundamental.
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it's just a symbol to indicate\na right angle-hit the site below\nfor more details of angles etc\n\nhttp://www.coolmath.com/\n\ni hope that this helps
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The ™ symbol is to be used for marks that either have a pending trademark application OR for marks that are simply claiming the rights to the mark.\n\nThe ® symbol is to be used for marks that have a Federally registered trademark.\n\nTrademarks can be names of products or services, logos, slogans, packaging and even sounds and smells. In essence, a trademark can be almost anything that is used to identify a particular product or service. Registering a trademark grants the owner exclusive rights to the mark within the specified industry. Of course, it's necessary to research the mark comprehensively prior to filing to ensure that there is no possibility of infringing upon another party. \n\nAnd to be sure to clear this issue up...\n\nThe © symbol is used to denote copyright ownership.\n\nCopyrights can be obtained for things of an artistic nature. This includes, of course, poetry, films, sculptures, music, fiction, etc. But can also include things that may not necessarily seem "artistic" in the general sense of the word. Copyrights can also be obtained for advertising copy, games, software programs and blueprints, to name just a few. \n\nI posted some links below in case you wanted to know more. Hope that helps!
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x' € S - {x}\nworks fine...\n( replace the € by the usual "is an element of" symbol )
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"^" is commonly used as a sign for "to the exponent of" when typing out math equations or on a graphing calculator. For example, 2^8 would be read "two to the exponent of eight" and in expanded form would look like: 2x2x2x2x2x2x2x2.
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SYMBOLS  \n\n         I AM
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What kind of a symbol?
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It is a symbol for teh word "section."  It is used to refer to parts of documents, statutes, and the like, such as paragraph X, section Y.  It can also refer to a section of land (one square mile).
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What sort of symbols? E and W are often used on maps for east and west. Is there something else you're refering to?
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♥     that is an and symbol, the word hearts and a ;           <that'll give u a heart\n:-)    ;-)     :-*    :-D       <smileys
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Sure, but I just need to know:  what does the symbol behind the "M" stand for?
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what the @!#$%&^$?poof
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The first means something like "woah."\n\nCheck out the following link, which provides a helpful little cheatsheet.
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On a mac, it means your code is not gramticcally correct. On a PC I don't know but it's proably the same.
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THAT HAS A CHARACTER..."@".
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It means multiply. This asterisk sign is used in almost all computer keyboards to represent "Mutiply". It must be there also from where you have typed your question.