how to make symbols used in differential equations and maths etc character map information needed

[NoOp]

On 03/05/2011 08:30 AM, Tapas Mishra wrote:
> On Sat, Mar 5, 2011 at 9:35 PM, Tony Pursell
> <ajp at princeswalk.fsnet.co.uk> wrote:
>> On Sat, 2011-03-05 at 20:49 +0530, Tapas Mishra wrote:
>> To type a character from Applications > Accessories > Character Map, use
>> Ctrl-Shift-U (prints a small underlined u) then key the Unicode given in
>> Character Map, then hit Enter or Return.
>>
>> Eg Ctrl-Shift-u, 0123, Return, gives ģ.
>>
>> Is that what you want?
>>
>> Tony
>>
> I am specifically looking for the symbol of differential.
> 

This one?
ϑ

U+03D1 - greek theta symbol - It's in the Character Map that Tony
pointed you to.