Math & Science ⇒ Any way to produce a semi-square parathesis?

[netheril96]

As shown below, I prefer the semi-square one but don't know how to generate it with LaTeX. The round one is default.
I also notice that when I put \dfrac in the denominater the bracket will become a semi-square one.But is there any way to force rendering semi-square?

[localghost]

As you might know, the appearance of those parentheses depends on the used (math) font. Computer Modern (CM) and Latin Modern (LM) provide parentheses with this shape. Perhaps you can acquire a taste for the parentheses of the fourier or kpfonts font package. The parentheses they offer are also rounded, but not as wide as those from CM or LM. Or just test some fonts with math support that you find in the font catalogue [1]. There are quite a lot nice looking fonts available. Along with their descriptions and samples you will find instructions which package to load.

[1] The LaTeX Font Catalogue — Front Page


Thorsten

[CrazyHorse]

As shown below, I prefer the semi-square one but don't know how to generate it with LaTeX. The round one is default.
I also notice that when I put \dfrac in the denominater the bracket will become a semi-square one.But is there any way to force rendering semi-square?

that is not possible. TeX has two types of parentheses, small and big ones.
If these two didn't fit then the parenthesis will always be created by three
elements, the lower part, a vertcal line, and the upper part. The reason why
you get for all big fractions semi-square one.

Herbert