Unicode: 2193. Infix arrow operator. x ↓ y is by default interpreted as DownArrow[x,y]. Used to indicate monotonic decrease to a limit. Sometimes used for logical nor. ...
Unicode: 21F5. Infix arrow operator. x ⇵ y is by default interpreted as DownArrowUpArrow[x,y]. Extensible character.
Unicode: F755. Alias: Esc dbv Esc. Letter-like form. Used in an overscript position as a diacritical mark.
Unicode: 00A1. Alias: Esc d! Esc. Letter-like form. Used in Spanish.
Unicode: 2950. Infix arrow-like operator. x ⥐ y is by default interpreted as DownLeftRightVector[x,y]. Extensible character.
Unicode: 295E. Infix arrow-like operator. x ⥞ y is by default interpreted as DownLeftTeeVector[x,y]. Extensible character.
Unicode: 2956. Infix arrow-like operator. x ⥖ y is by default interpreted as DownLeftVectorBar[x,y]. Extensible character.
Unicode: 21BD. Infix arrow-like operator. x ↽ y is by default interpreted as DownLeftVector[x,y]. Extensible character.
Unicode: 25BE.
Unicode: 00BF. Alias: Esc d? Esc. Letter-like form. Used in Spanish.