Character	Entity	Decimal	Hex	Rendering in Your Browser
				Entity	Decimal	Hex
bullet = black small circle	•	•	•	•	•	•
horizontal ellipsis = three dot leader	…	…	…	…	…	…
leftwards arrow is implied by	←	←	←	←	←	←
upwards arrow	↑	↑	↑	↑	↑	↑
rightwards arrow implies (if...then)	→	→	→	→	→	→
downwards arrow	↓	↓	↓	↓	↓	↓
left right arrow if and only if	↔	↔	↔	↔	↔	↔
leftwards double arrow is implied by	⇐	⇐	⇐	⇐	⇐	⇐
upwards double arrow	⇑	⇑	⇑	⇑	⇑	⇑
rightwards double arrow implies (if...then)	⇒	⇒	⇒	⇒	⇒	⇒
downwards double arrow	⇓	⇓	⇓	⇓	⇓	⇓
left right double arrow if and only if	⇔	⇔	⇔	⇔	⇔	⇔
for all	∀	∀	∀	∀	∀	∀
there exists	∃	∃	∃	∃	∃	∃
empty set = null set	∅	∅	∅	∅	∅	∅
element of	∈	∈	∈	∈	∈	∈
not an element of	∉	∉	∉	∉	∉	∉
contains as member	∋	∋	∋	∋	∋	∋
n-ary product = product sign	∏	∏	∏	∏	∏	∏
n-ary sumation	∑	∑	∑	∑	∑	∑
minus sign	−	−	−	−	−	−
square root = radical sign	√	√	√	√	√	√
infinity	∞	∞	∞	∞	∞	∞
logical and	∧	∧	∧	∧	∧	∧
logical or	∨	∨	∨	∨	∨	∨
intersection	∩	∩	∩	∩	∩	∩
union	∪	∪	∪	∪	∪	∪
almost equal to = asymptotic to	≈	≈	≈	≈	≈	≈
not equal to	≠	≠	≠	≠	≠	≠
identical to	≡	≡	≡	≡	≡	≡
less-than or equal to	≤	≤	≤	≤	≤	≤
greater-than or equal to	≥	≥	≥	≥	≥	≥
subset of	⊂	⊂	⊂	⊂	⊂	⊂
superset of	⊃	⊃	⊃	⊃	⊃	⊃
not a subset of	⊄	⊄	⊄	⊄	⊄	⊄
subset of or equal to	⊆	⊆	⊆	⊆	⊆	⊆
superset of or equal to	⊇	⊇	⊇	⊇	⊇	⊇