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Punctuation marks
apostrophe (' ) parentheses ( ( ) ), brackets ( [ ] ); ( { } ); ( < > ) colon ( : ) comma ( , ) dash ( ‒ ); ( – ); ( — ); ( ― ) ellipsis ( … ) ( ... ) exclamation mark ( ! ); ( ¡ ! ) full stop/period ( . ) hyphen ( - ); ( ‐ ) interrobang ( ‽ ) question mark ( ? ); ( ¿ ? ) quotation marks ( ‘ ’ ); ( “ ” ); ( ‚ ’ ); ( „ ” ); ( ‚ ‘ ); ( „ “ ); ( ‹ › ); ( « » ); ( › ‹ ); ( » « ); ( 「」 ); ( 『』 ) semicolon ( ; ) slash ( / ) and backslash ( \ ) space ( ) and interpunct ( · )
ampersand ( & ) asterisk ( * ) and asterism ( ⁂ ) dagger ( † ‡) bullet ( •, more ) commercial at ( @ ) number sign ( # ) prime ( ′ ) and double prime (″) tilde ( ~ ) underscore ( _ ) vertical bar / pipe ( \| )

apostrophe (' )
parentheses ( ( ) ),
brackets ( [ ] ); ( { } ); ( < > )
colon ( : )
comma ( , )
dash ( ‒ ); ( – ); ( — ); ( ― )
ellipsis ( … ) ( ... )
exclamation mark ( ! ); ( ¡ ! )
full stop/period ( . )
hyphen ( - ); ( ‐ )
interrobang ( ‽ )
question mark ( ? ); ( ¿ ? )
quotation marks ( ‘ ’ ); ( “ ” );

( ‚ ’ ); ( „ ” ); ( ‚ ‘ ); ( „ “ );
( ‹ › ); ( « » ); ( › ‹ ); ( » « );
( 「」 ); ( 『』 )

semicolon ( ; )
slash ( / ) and backslash ( \ )
space ( ) and interpunct ( · )

ampersand ( & )
asterisk ( * ) and asterism ( ⁂ )
dagger ( † ‡)
bullet ( •, more )
commercial at ( @ )
number sign ( # )
prime ( ′ ) and double prime (″)
tilde ( ~ )
underscore ( _ )
vertical bar / pipe ( | )

This article is not about the symbol for the set of prime numbers, ℙ.

The prime (′, Unicode 0x2032, ′) is neither an apostrophe (', Unicode 0x0027) nor an acute accent (´, Unicode 0x00B4). It has several uses:

In set theory, A′ is the complement of the set A.
A′ can mean a point related to A (e.g. by a transformation T).
f′(x) is the first derivative (or derived function) of f(x).
42′ can mean 42 arcminutes (or sometimes, 42 minutes of time).
7′ can mean 7 feet.
The prime can be used in the transliteration of some languages, such as Russian, where it is sometimes used to denote palatalization.

The double prime (″, Unicode 0x2033, ″) is not a quotation mark (", Unicode 0x0022), and is equivalent two prime characters. It is used for similar purposes:

f″(x) is the second derivative of f(x).
42″ can mean 42 arcsecondA second of arc or arcsecond is a unit of angular measurement which comprises one-sixtieth of an arcminute, or 1/3600 of a degree of arc or 1/1296000 ≈ 7. 7E-7 of a circle. It is the angular diameter on object of 1 unit diameter at a distance of 360s (or sometimes, 42 secondThis article is about the unit of time. See second (disambiguation) for other uses The second (symbol s is a unit for time, and one of seven SI base units. It is defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transis of time, e.g. on some digital cameras).
7″ can mean 7 inchAn inch is an Imperial unit of length. Sweden also briefly had a "decimal inch" based on the metric system: see below for more. According to some sources, the inch was originally defined informally as the distance between the tip of the thumb and the firses.

The triple prime (‴, Unicode 0x2034) can mean the third derivative of a function. Similarly, the quadruple prime (⁗, Unicode 0x2057) can mean the fourth derivative of a function. Not all Web browsers can display these symbols.

To avoid counting the number of primes, the notation f⁽ⁿ⁾(x) can be used to mean the nth derivative of f(x) when n is large.

Prime and double prime are often approximated by normal or italic apostrophes and quotation marks, (' or ', " or "), especially when the character set used does not include the prime or double prime character (e.g. ISO-Latin-1 is commonly assumed on IRCInternet Relay Chat (IRC is a form of instant communication over the Internet. It is mainly designed for group (one-to-many) communication in discussion forums called channels but also allows one-to-one communication. IRC was created by Jarkko Oikarinen ().

References: Unicode NamesList (rather large)

PunctuationPunctuation marks are written symbols that do not correspond to either phonemes (sounds) of a spoken language nor to lexemes (words and phrases) of a written language, but which serve to organize or clarify written language. See orthography. The rules of TypographyTypography is art and technique of selecting and arranging type styles, point sizes, line lengths, line leading, character spacing, and word spacing for typeset applications. These applications can be phyiscal or digital. The two primary functions of typo

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Topics: Prime (mark) Unicode Derivative Set Function Double F''(''x...

PrimerThis article is about molecular biology for alternate uses, see primer (disambiguation). A primer is a nucleic acid strand (or related molecule) that serves as a starting point for DNA replication. A primer is required because most DNA polymerases ( enzym	Prime numberIn mathematics, a prime number or prime for short, is a natural number whose only distinct positive divisors are 1 and itself; otherwise it is called a composite number . Hence a prime number has exactly two divisors. The number 1 is neither prime nor com	Prime number theoremIn number theory, the prime number theorem PNT describes the approximate, asymptotic distribution of the prime numbers. For any positive real number x define : The prime number theorem then states that : where ln x is the natural logarithm of x''. This no
Prime MinisterAlternate meaning: Prime Minister (band #A prime minister is the leading member of the cabinet of the top level government in a parliamentary system of government of a country, alternatively #A prime minister is an official in a presidential system or sem	Prime Minister of AustraliaThe office of Prime Minister is in practice the most powerful political office in the Commonwealth of Australia. By convention, the Prime Minister is the leader of the party or coalition which has the most seats in the lower house of the Federal Parliamen	Prime Minister of CanadaThe Prime Minister of Canada the head of the Canadian government, is usually the leader of the political party with the most seats in the Canadian House of Commons. The Prime Minister has the right to the style of Right Honourable''. The current prime min
Prime Minister of the United Kingdom	Prime Minister of India	Prime Minister of Japan
Prime Minister of Israel	Prime ideal	Prime time
Prime Directive	Prime Meridian	Primera, Texas

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