In functional analysis, one occasionally considers a so-called dual pair (a pair of vector spaces tied together by a non-degenerate bilinear map to the ground field). I usually typeset these using
\rangle, but it seems that all textbooks in functional analysis use a slightly different symbol for this. (See samples below.) The shape is very similar to
\rangle, but the angle between the two legs is noticeably smaller. Consequently, the glyph is a bit wider.
How do I reproduce this symbol in LaTeX?
H. H. Schaefer, with M. P. Wolff, Topological Vector Spaces, Second Edition (1999), p. 123:
Walter Rudin, Functional Analysis, Second Edition (1991), p. 93:
John B. Conway, A Course in Functional Analysis (1985), p. 127:
Gert K. Pedersen, Analysis Now, Corrected second printing (1995), p. 59:
Mahlon M. Day, Normed Linear Spaces, Second printing corrected (1962), p. 8:
... and the list goes on and on.