Variables

[Terry Reedy]

>>In mathematics, the word 'variable' is generally an undefined meta-term 
>>that is *notorious* for having multiple possible meanings and shades of 
>>meaning.  One mathematician/linguist once claimed to have discerned 
>>somewhere around 15 different meanings and shades thereof. <SNIP>
>>
> What is his/her name?

Wish I could remember but this was some decades ago.  But you should be 
able to think a few yourself.

Terry J. Reedy