User:Mini-floh/sandbox

\bigsqcup does work: $$\quad\bigsqcup\quad$$. \bigsqcap does not work $$\quad\bigsqcap\quad$$. Using &#x220F; is oK outside of mathematical context, but does not work within math-environment: $$&#x220F;$$ $$\quad\bigsqcup\quad$$ and &#x2210; are not very similar!

&#x2293; &#x220F; &#x2294; &#x2210; $$\bigsqcup$$