NotSubsetEqual 
NotSubsetEqual
NotSubsetEqual[x,y,…]
displays as 
.
Details
- NotSubsetEqual[x,y,…] has no built-in meaning.
is by default interpreted as NotSubsetEqual[x,y].
can be entered as \[NotSubsetEqual] or 
!sub=
.
Examples
Basic Examples (2)
Typeset output automatically uses the corresponding character:
NotSubsetEqual[x, y, z]An input using the typeset character gives a NotSubsetEqual expression:
x⊈y⊈z//FullForm
Wolfram Research (1996), NotSubsetEqual, Wolfram Language function, https://reference.wolfram.com/language/ref/NotSubsetEqual.html.
Text
Wolfram Research (1996), NotSubsetEqual, Wolfram Language function, https://reference.wolfram.com/language/ref/NotSubsetEqual.html.
CMS
Wolfram Language. 1996. "NotSubsetEqual." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/NotSubsetEqual.html.
APA
Wolfram Language. (1996). NotSubsetEqual. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/NotSubsetEqual.html