# What is the font for “b” letter? [duplicate]

What is the font for "b" letter?

## marked as duplicate by The old JouleV, Raaja, Stefan Pinnow, TeXnician, KurtApr 19 at 9:46

• Looks like \flat. – Bernard Apr 18 at 17:43
• How to use this statement? – Minh Apr 18 at 17:46
• Welcome to tex.sx. The first part of this expression would be coded $f^{\flat} ...$. – barbara beeton Apr 18 at 17:49
• So... two different new contributors ask about the \sharp and \flat symbols within 3 hours of each other? tex.stackexchange.com/questions/485484/… – James Apr 18 at 18:29
• @James seems only natural ... – davidbak Apr 18 at 20:55

\documentclass{article}
$f^{\flat}\colon R \longrightarrow R$%

• It is simply the Greek letter χ (\chi, to be used in math mode). – Bernard Apr 19 at 8:18