Which symbol is used to represent approximately

Frequently used characters

+Plus sign+& # x002b;—+−Minus sign−& # x2212;−—×Mark×& # xd7;x—÷Divided sign÷& # xf7;?& div;±Plus minus sign±& # x00b1;±& pm;
&Plus minus;=equal=& # x003d;—& equals;≠unequal≠& # x2260;& ne;& NotEqual;≅about the same≅& # x2245;& cong;& TildeFullEqual;≈almost the same (according to DIN: approximately equal / rounded)≈& # x2248;& asymp;& ap;
?
& approx;
& thickapprox;
& TildeTilde;
≡congruent, identical≡& # x2261;& equiv;& Congruent;≙corresponds to≙& # x2259;—& wedgeq;≤less than or equal to≤& # x2264;??≥greater than or equal to≥& # x2265;??
& GreaterEqual;⇒it follows⇒& # x21d2;& rArr;& Implies;
& Rightarrow;
& DoubleRightArrow;⇔exactly when⇔& # x21d4;& hArr;& iff;
& Leftrightarrow;
& DoubleLeftRightArrow;ℂSet of complex numbers&#8450& # x2102;—& Copf;
& complexes;ℕSet of natural numbersℕ& # x2115;—& Nopf;
& naturals;ℙSet of prime numbersℙ& # x2119;—& Popf;
& primes;ℚSet of rational numbersℚ& # x211a;—& Qopf;
& rationals;ℝSet of real numbersℝ& # x211d;—& Ropf;
& reals;ℤSet of whole numbersℤ& # x2124;—&Braid;
& integers;∞infinite∞& # x221e;?—∝proportional to∝& # x221d;& prop;& vprop;
& propto;
& varpropto;
∝√square root√& # x221a;?& Sqrt;πCircle number (Pi)π& # x03c0;π—∑Sum symbol∑& # x2211;& sum;—∈is element of∈& # x2208;?∈
& isinv;
∈∉is not an element of∉& # x2209;& notin;& notinva;
& NotElement;∀for all∀& # x2200;& forall;—∃there is at least one∃& # x2203;& exist;& Exists;|for which applies|& # x007c;—& vert;
& verbar;
& VerticalLine;∅empty set∅& # x2205;??
& emptyset;
& varnothing;⌀average⌀& # x2300;——∩Average amount∩& # x2229;& cap;—∪Union set∪& # x222a;& cup;—⊆is a subset of⊆& # x2286;?& subseteq;
& SubsetEqual;⊇is a superset of⊇& # x2287;?& supseteq;
& SupersetEqual;∖Difference amount∖& # x2216;—& setmn;
& ssetmn;
& setminus;
& smallsetminus;
& Backslash;^superscript (power)^& # x005e;—&Has;∧logical and∧& # x2227;& and;& wedge;∨logical or∨& # x2228;& or;& vee;¬logical not¬& # x00ac;& not;—∥parallel∥& # x2225;—∥
& spar;

& shortparallel;
& DoubleVerticalBar;∦not parallel∦& # x2226;—& npar;
& nspar;
& nparallel;
& nshortparallel;
& NotDoubleVerticalBar;△triangle△& # x25b3;—?
& bigtriangleup;∆Laplace operator∆& # x2206;——∇Nabla∇& # x2207;& nabla;& Del;∢angle∢& # x2222;—& angsph;→arrow to the right→& # x2192;→?
& rightarrow;
& ShortRightArrow;∣Splits∣& # x2223;—?
& smid;
& shortmid;
& VerticalBar;