The Not Normal Subgroup Of symbol (⋪). Copy and paste it, or use its Unicode, HTML, and CSS codes.
More from Math.
The quickest way is to copy ⋪ from this page and paste it anywhere. You can also insert it with its Unicode, HTML, or alt code listed above.
⋪ is U+22EA (decimal 8938).
Use ⋪ in HTML to render ⋪ on a web page.
On Windows you can type it with Alt+8938 (hold Alt and enter the number on the numeric keypad).
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