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Declaring math symbols

`\DeclareMathSymbol` `{`<symbol>`}` `{`<type>`}` `{`<sym-font>`}` `{`<slot>`}`

The <symbol> can be either a single character such as ``>`', or a macro name, such as `\sum`. Defines the <symbol> to be a math symbol of type <type> in slot <slot> of symbol font <sym-font>. The <type> can be given as a number or as a command:

Type | Meaning | Example
`0` or `\mathord` | Ordinary |
`1` or `\mathop` | Large operator |
`2` or `\mathbin` | Binary operation |
`3` or `\mathrel` | Relation |
`4` or `\mathopen` | Opening |
`5` or `\mathclose` | Closing |
`6` or `\mathpunct` | Punctuation | ;
`7` or `\mathalpha` | Alphabet character | A

Only symbols of type `\mathalpha` will be affected by math alphabet commands: within the argument of a math alphabet command they will produce the character in slot <slot> of that math alphabet's font. Symbols of other types will always produce the same symbol (within one math version). `\DeclareMathSymbol` allows a macro <symbol> to be redefined only if it was previously defined to be a math symbol. It also checks that the <sym-font> is a declared symbol font. Example:

       \DeclareMathSymbol{\alpha}{0}{letters}{"0B}
       \DeclareMathSymbol{\lessdot}{\mathbin}{AMSb}{"0C}
       \DeclareMathSymbol{\alphld}{\mathalpha}{AMSb}{"0C}

`\DeclareMathDelimiter` `{`<cmd>`}` `{`<type>`}` `{`<sym-font-1>`}` `{`<slot-1>`}`
`{`<sym-font-2>`}` `{`<slot-2>`}`

Defines <cmd> to be a math delimiter where the small variant is in slot <slot-1> of symbol font <sym-font-1> and the large variant is in slot <slot-2> of symbol font <sym-font-2>. Both symbol fonts must have been declared previously. Checks that <sym-font-i> are both declared symbol fonts. If TEX is not looking for a delimiter, <cmd> is treated just as if it had been defined with `\DeclareMathSymbol` using <type>, <sym-font-1> and <slot-1>. In other words, if a command is defined as a delimiter then this automatically defines it as a math symbol.

In case <cmd> is a single character such as ``[`', the same syntax is used. Previously the `{`<type>`}` argument was not present (and thus the corresponding math symbol declaration had to be provided seperately). Example:

       \DeclareMathDelimiter{\langle}{\mathopen}{symbols}{"68}
                                                {largesymbols}{"0A}
       \DeclareMathDelimiter{(}      {\mathopen}{operators}{"28}
                                                {largesymbols}{"00}

`\DeclareMathAccent` `{`<cmd>`}` `{`<type>`}` `{`<sym-font>`}` `{`<slot>`}`

Defines <cmd> to act as a math accent. The accent character comes from slot <slot> in <sym-font>. The <type> can be either `\mathord` or `\mathalpha`; in the latter case the accent character changes font when used in a math alphabet. Example:

       \DeclareMathAccent{\acute}{\mathalpha}{operators}{"13}
       \DeclareMathAccent{\vec}{\mathord}{letters}{"7E}

`\DeclareMathRadical` `{`<cmd>`}` `{`<sym-font-1>`}` `{`<slot-1>`}`
`{`<sym-font-2>`}` `{`<slot-2>`}`

Defines <cmd> to be a radical where the small variant is in slot <slot-1> of symbol font <sym-font-1> and the large variant is in slot <slot-2> of symbol font <sym-font-2>. Both symbol fonts must have been declared previously. Example (probably the only use for it!):

       \DeclareMathRadical{\sqrt}{symbols}{"70}{largesymbols}{"70}

Next: Declaring math sizes Up: Math fonts Previous: Declaring symbol fonts