I would like to be able to use this font when I'm not using LaTeX, is that possible? Is it available somewhere? Which is its name?

Thank you very much.

jsMath-cmbsy10  Sugerida por rocamaco 


Tex Mathc10  Sugerida por 匿名 
jsMath-eusm10  Sugerida por claudeserieux 

It's the second one of the table suggested by Claude, cmbsy10, not eusm10, I think...

rocamaco is right, its the uppercase characters of cmbsy10

Identified font: cmbsy10

Thank you rocamaco

You made my day