Equality and similar symbols

 eq `=∼∽≈≋∻∾∿≀≃⋍≂≅ ≌≊≡≣≐≑≒≓≔≕≖≗≘≙≚≛≜≝≞≟≍≎≏≬⋕` eqn `≠≁ ≉ ≄ ≇≆ ≢ ≭`
 =n `≠` ~ `∼` ~n `≁` ~~ `≈` ~~n `≉` ~ `≋` :~ `∻` ~- `≃` ~-n `≄` -~ `≂` ~= `≅` ~=n `≇` ~~- `≊` == `≡` ==n `≢` === `≣` .= `≐` .=. `≑` := `≔` =: `≕` =o `≗` (= `≘` and= `≙` or= `≚` *= `≛` t= `≜` def= `≝` m= `≞` ?= `≟`

Inequality and similar symbols

 leq `<≪⋘≤≦≲ ≶≺≼≾⊂⊆ ⋐⊏⊑ ⊰⊲⊴⋖⋚⋜⋞` leqn `≮ ≰≨≴⋦≸⊀ ⋨⊄⊈⊊ ⋢⋤ ⋪⋬ ⋠` geq `>≫⋙≥≧≳ ≷≻≽≿⊃⊇ ⋑⊐⊒ ⊱⊳⊵⋗⋛⋝⋟` geqn `≯ ≱≩≵⋧≹⊁ ⋩⊅⊉⊋ ⋣⋥ ⋫⋭ ⋡`
 <= `≤` >= `≥` <=n `≰` >=n `≱` len `≰` gen `≱` n `≯` <~ `≲` >~ `≳` <~n `⋦` >~n `⋧` <~nn `≴` >~nn `≵`
 sub `⊂` sup `⊃` subn `⊄` supn `⊅` sub= `⊆` sup= `⊇` sub=n `⊈` sup=n `⊉`
 squb `⊏` squp `⊐` squb= `⊑` squp= `⊒` squb=n `⋢` squp=n `⋣`

Set membership etc

 member `∈∉∊∋∌∍⋲⋳⋴⋵⋶⋷⋸⋹⋺⋻⋼⋽⋾⋿`
 inn `∉` nin `∌`

Intersections, unions etc

 intersection `∩⋂∧⋀⋏⨇⊓⨅⋒∏ ⊼ ⨉` union `∪⋃∨⋁⋎⨈⊔⨆⋓∐⨿⊽⊻⊍⨃⊎⨄⊌∑⅀`
 and `∧` or `∨` And `⋀` Or `⋁` i `∩` un `∪` u+ `⊎` u. `⊍` I `⋂` Un `⋃` U+ `⨄` U. `⨃` glb `⊓` lub `⊔` Glb `⨅` Lub `⨆`

Entailment etc.

 entails `⊢⊣⊤⊥⊦⊧⊨⊩⊪⊫⊬⊭⊮⊯`
 |- `⊢` |-n `⊬` -| `⊣` |= `⊨` |=n `⊭` ||- `⊩` ||-n `⊮` ||= `⊫` ||=n `⊯` |||- `⊪`

Divisibility, parallelity

 | `∣` |n `∤` || `∥` ||n `∦`

Some symbols from logic and set theory

 all `∀` ex `∃` exn `∄` 0 `∅` C `∁`

Corners, ceilings and floors

 c `⌜⌝⌞⌟⌈⌉⌊⌋` cu `⌜⌝ ⌈⌉` cl `⌞⌟ ⌊⌋`
 cul `⌜` cuL `⌈` cur `⌝` cuR `⌉` cll `⌞` clL `⌊` clr `⌟` clR `⌋`

Various operators/symbols

 qed `∎` x `×` o `∘` comp `∘` . `∙` * `⋆` .+ `∔` .- `∸` : `∶` :: `∷` ::- `∺` -: `∹` + `⊹` surd3 `∛` surd4 `∜` increment `∆` inf `∞` & `⅋`

Circled operators

 o+ `⊕` o-- `⊖` ox `⊗` o/ `⊘` o. `⊙` oo `⊚` o* `⊛` o= `⊜` o- `⊝`
 O+ `⨁` Ox `⨂` O. `⨀` O* `⍟`

Boxed operators

 b+ `⊞` b- `⊟` bx `⊠` b. `⊡`

Various symbols

 integral `∫∬∭∮∯∰∱∲∳` angle `∟∡∢⊾⊿` join `⋈⋉⋊⋋⋌⨝⟕⟖⟗`

Arrows

 l `←⇐⇚⇇⇆↤⇦↞↼↽⇠⇺↜⇽⟵⟸↚⇍⇷ ↹ ↢↩↫⇋⇜⇤⟻⟽⤆↶↺⟲` r `→⇒⇛⇉⇄↦⇨↠⇀⇁⇢⇻↝⇾⟶⟹↛⇏⇸⇶ ↴ ↣↪↬⇌⇝⇥⟼⟾⤇↷↻⟳⇰⇴⟴⟿ ➵➸➙➔➛➜➝➞➟➠➡➢➣➤➧➨➩➪➫➬➭➮➯➱➲➳➺➻➼➽➾⊸` u `↑⇑⟰⇈⇅↥⇧↟↿↾⇡⇞ ↰↱➦ ⇪⇫⇬⇭⇮⇯` d `↓⇓⟱⇊⇵↧⇩↡⇃⇂⇣⇟ ↵↲↳➥ ↯` ud `↕⇕ ↨⇳` lr `↔⇔ ⇼↭⇿⟷⟺↮⇎⇹` ul `↖⇖ ⇱↸` ur `↗⇗ ➶➹➚` dr `↘⇘ ⇲ ➴➷➘` dl `↙⇙`
 l- `←` <- `←` l= `⇐` r- `→` -> `→` r= `⇒` => `⇒` u- `↑` u= `⇑` d- `↓` d= `⇓` ud- `↕` ud= `⇕` lr- `↔` <-> `↔` lr= `⇔` <=> `⇔` ul- `↖` ul= `⇖` ur- `↗` ur= `⇗` dr- `↘` dr= `⇘` dl- `↙` dl= `⇙`
 l== `⇚` l-2 `⇇` l-r- `⇆` r== `⇛` r-2 `⇉` r-3 `⇶` r-l- `⇄` u== `⟰` u-2 `⇈` u-d- `⇅` d== `⟱` d-2 `⇊` d-u- `⇵`
 l-- `⟵` <-- `⟵` l~ `↜⇜` r-- `⟶` --> `⟶` r~ `↝⇝⟿` lr-- `⟷` <--> `⟷` lr~ `↭`
 l-n `↚` <-n `↚` l=n `⇍` r-n `↛` ->n `↛` r=n `⇏` =>n `⇏` lr-n `↮` <->n `↮` lr=n `⇎` <=>n `⇎`
 l-| `↤` ll- `↞` r-| `↦` rr- `↠` u-| `↥` uu- `↟` d-| `↧` dd- `↡` ud-| `↨`
 l-> `↢` r-> `↣`
 r-o `⊸` -o `⊸`
 dz `↯`

Ellipsis

 ... `⋯⋮⋰⋱`

Box-drawing characters

 --- `─│┌┐└┘├┤┬┼┴╴╵╶╷╭╮╯╰╱╲╳` --= `═║╔╗╚╝╠╣╦╬╩ ╒╕╘╛╞╡╤╪╧ ╓╖╙╜╟╢╥╫╨` --_ `━┃┏┓┗┛┣┫┳╋┻╸╹╺╻ ┍┯┑┕┷┙┝┿┥┎┰┒┖┸┚┠╂┨┞╀┦┟╁┧┢╈┪┡╇┩ ┮┭┶┵┾┽┲┱┺┹╊╉╆╅╄╃ ╿╽╼╾` --. `╌╎┄┆┈┊ ╍╏┅┇┉┋`

Triangles

Big/small, black/white.

 t `◂◃◄◅▸▹►▻▴▵▾▿◢◿◣◺◤◸◥◹` T `◀◁▶▷▲△▼▽◬◭◮`
 tb `◂▸▴▾◄►◢◣◤◥` tw `◃▹▵▿◅▻◿◺◸◹`
 Tb `◀▶▲▼` Tw `◁▷△▽`

Squares

 sq `■□◼◻◾◽▣▢▤▥▦▧▨▩◧◨◩◪◫◰◱◲◳` sqb `■◼◾` sqw `□◻◽` sq. `▣` sqo `▢`

Rectangles

 re `▬▭▮▯` reb `▬▮` rew `▭▯`

Parallelograms

 pa `▰▱` pab `▰` paw `▱`

Diamonds

 di `◆◇◈` dib `◆` diw `◇` di. `◈`

Circles

 ci `●○◎◌◯◍◐◑◒◓◔◕◖◗◠◡◴◵◶◷⚆⚇⚈⚉` cib `●` ciw `○` ci. `◎` ci.. `◌` ciO `◯`

Stars.

 st `⋆✦✧✶✴✹ ★☆✪✫✯✰✵✷✸` st4 `✦✧` st6 `✶` st8 `✴` st12 `✹`

Blackboard bold letters

 bn `ℕ` bz `ℤ` bq `ℚ` br `ℝ` bc `ℂ` bp `ℙ` bb `𝔹` bsum `⅀`

Blackboard bold numbers

 b0 `𝟘` b1 `𝟙` b2 `𝟚` b3 `𝟛` b4 `𝟜` b5 `𝟝` b6 `𝟞` b7 `𝟟` b8 `𝟠` b9 `𝟡`

Parentheses

 ( `([{⁅⁽₍〈⎴⟅⟦⟨⟪⦃〈《「『【〔〖〚︵︷︹︻︽︿﹁﹃﹙﹛﹝（［｛｢` ) `)]}⁆⁾₎〉⎵⟆⟧⟩⟫⦄〉》」』】〕〗〛︶︸︺︼︾﹀﹂﹄﹚﹜﹞）］｝｣`
 [[ `⟦` ]] `⟧` < `⟨` > `⟩` << `⟪` >> `⟫` {{ `⦃` }} `⦄`
 (b `⟅` )b `⟆`
 lbag `⟅` rbag `⟆`

Primes

 ' `′″‴⁗` ` `‵‶‷`

Fractions

 frac `¼½¾⅓⅔⅕⅖⅗⅘⅙⅚⅛⅜⅝⅞⅟`

Bullets

 bu `•◦‣⁌⁍` bub `•` buw `◦` but `‣`

Musical symbols

 note `♩♪♫♬` b `♭` # `♯`

Other punctuation and symbols

 \ `\\` en `–` em `—` ^i `ⁱ` !! `‼` ?? `⁇` ?! `‽ ⁈` !? `⁉` die `⚀⚁⚂⚃⚄⚅` asterisk `⁎⁑⁂✢✣✤✥✱✲✳✺✻✼✽❃❉❊❋` 8< `✂ ✄` tie `⁀` undertie `‿` apl `⌶⌷⌸⌹⌺⌻⌼⌽⌾⌿⍀⍁⍂⍃⍄⍅⍆⍇⍈ ⍉⍊⍋⍌⍍⍎⍏⍐⍑⍒⍓⍔⍕⍖⍗⍘⍙⍚⍛ ⍜⍝⍞⍟⍠⍡⍢⍣⍤⍥⍦⍧⍨⍩⍪⍫⍬⍭⍮ ⍯⍰⍱⍲⍳⍴⍵⍶⍷⍸⍹⍺⎕`

Some combining characters

The following combining characters also have (other) translations: `́ ̂ ̃ ̄ ̆ ̇ ̈ ̋ ̌ ̣ ̧ ̱`

 ^-- `̅̿` _-- `̲̳` ^~ `̃͌` _~ `̰` ^. `̇̈⃛⃜` _. `̣̤` ^l `⃖⃐⃔` ^l- `⃖` ^r `⃗⃑⃕` ^r- `⃗` ^lr `⃡` _lr `͍` ^^ `̂̑͆` _^ `̭̯̪` ^v `̌̆` _v `̬̮̺`

Shorter forms of many greek letters plus ƛ

 Ga `α` GA `Α` Gb `β` GB `Β` Gg `γ` GG `Γ` Gd `δ` GD `Δ` Ge `ε` GE `Ε` Gz `ζ` GZ `Ζ` Gth `θ` GTH `Θ` Gi `ι` GI `Ι` Gk `κ` GK `Κ` Gl `λ` GL `Λ` Gl- `ƛ` Gm `μ` GM `Μ` Gn `ν` GN `Ν` Gx `ξ` GX `Ξ` Gr `ρ` GR `Ρ` Gs `σ` GS `Σ` Gt `τ` GT `Τ` Gu `υ` GU `Υ` Gf `φ` GF `Φ` Gc `χ` GC `Χ` Gp `ψ` GP `Ψ` Go `ω` GO `Ω`

Mathematical characters

 MiA `𝐴` MiB `𝐵` MiC `𝐶` MiD `𝐷` MiE `𝐸` MiF `𝐹` MiG `𝐺` MiH `𝐻` MiI `𝐼` MiJ `𝐽` MiK `𝐾` MiL `𝐿` MiM `𝑀` MiN `𝑁` MiO `𝑂` MiP `𝑃` MiQ `𝑄` MiR `𝑅` MiS `𝑆` MiT `𝑇` MiU `𝑈` MiV `𝑉` MiW `𝑊` MiX `𝑋` MiY `𝑌` MiZ `𝑍` Mia `𝑎` Mib `𝑏` Mic `𝑐` Mid `𝑑` Mie `𝑒` Mif `𝑓` Mig `𝑔` Mii `𝑖` Mij `𝑗` Mik `𝑘` Mil `𝑙` Mim `𝑚` Min `𝑛` Mio `𝑜` Mip `𝑝` Miq `𝑞` Mir `𝑟` Mis `𝑠` Mit `𝑡` Miu `𝑢` Miv `𝑣` Miw `𝑤` Mix `𝑥` Miy `𝑦` Miz `𝑧` MIA `𝑨` MIB `𝑩` MIC `𝑪` MID `𝑫` MIE `𝑬` MIF `𝑭` MIG `𝑮` MIH `𝑯` MII `𝑰` MIJ `𝑱` MIK `𝑲` MIL `𝑳` MIM `𝑴` MIN `𝑵` MIO `𝑶` MIP `𝑷` MIQ `𝑸` MIR `𝑹` MIS `𝑺` MIT `𝑻` MIU `𝑼` MIV `𝑽` MIW `𝑾` MIX `𝑿` MIY `𝒀` MIZ `𝒁` MIa `𝒂` MIb `𝒃` MIc `𝒄` MId `𝒅` MIe `𝒆` MIf `𝒇` MIg `𝒈` MIh `𝒉` MIi `𝒊` MIj `𝒋` MIk `𝒌` MIl `𝒍` MIm `𝒎` MIn `𝒏` MIo `𝒐` MIp `𝒑` MIq `𝒒` MIr `𝒓` MIs `𝒔` MIt `𝒕` MIu `𝒖` MIv `𝒗` MIw `𝒘` MIx `𝒙` MIy `𝒚` MIz `𝒛` McA `𝒜` McC `𝒞` McD `𝒟` McG `𝒢` McJ `𝒥` McK `𝒦` McN `𝒩` McO `𝒪` McP `𝒫` McQ `𝒬` McS `𝒮` McT `𝒯` McU `𝒰` McV `𝒱` McW `𝒲` McX `𝒳` McY `𝒴` McZ `𝒵` Mca `𝒶` Mcb `𝒷` Mcc `𝒸` Mcd `𝒹` Mcf `𝒻` Mch `𝒽` Mci `𝒾` Mcj `𝒿` Mck `𝓀` Mcl `𝓁` Mcm `𝓂` Mcn `𝓃` Mcp `𝓅` Mcq `𝓆` Mcr `𝓇` Mcs `𝓈` Mct `𝓉` Mcu `𝓊` Mcv `𝓋` Mcw `𝓌` Mcx `𝓍` Mcy `𝓎` Mcz `𝓏` MCA `𝓐` MCB `𝓑` MCC `𝓒` MCD `𝓓` MCE `𝓔` MCF `𝓕` MCG `𝓖` MCH `𝓗` MCI `𝓘` MCJ `𝓙` MCK `𝓚` MCL `𝓛` MCM `𝓜` MCN `𝓝` MCO `𝓞` MCP `𝓟` MCQ `𝓠` MCR `𝓡` MCS `𝓢` MCT `𝓣` MCU `𝓤` MCV `𝓥` MCW `𝓦` MCX `𝓧` MCY `𝓨` MCZ `𝓩` MCa `𝓪` MCb `𝓫` MCc `𝓬` MCd `𝓭` MCe `𝓮` MCf `𝓯` MCg `𝓰` MCh `𝓱` MCi `𝓲` MCj `𝓳` MCk `𝓴` MCl `𝓵` MCm `𝓶` MCn `𝓷` MCo `𝓸` MCp `𝓹` MCq `𝓺` MCr `𝓻` MCs `𝓼` MCt `𝓽` MCu `𝓾` MCv `𝓿` MCw `𝔀` MCx `𝔁` MCy `𝔂` MCz `𝔃` MfA `𝔄` MfB `𝔅` MfD `𝔇` MfE `𝔈` MfF `𝔉` MfG `𝔊` MfJ `𝔍` MfK `𝔎` MfL `𝔏` MfM `𝔐` MfN `𝔑` MfO `𝔒` MfP `𝔓` MfQ `𝔔` MfS `𝔖` MfT `𝔗` MfU `𝔘` MfV `𝔙` MfW `𝔚` MfX `𝔛` MfY `𝔜` Mfa `𝔞` Mfb `𝔟` Mfc `𝔠` Mfd `𝔡` Mfe `𝔢` Mff `𝔣` Mfg `𝔤` Mfh `𝔥` Mfi `𝔦` Mfj `𝔧` Mfk `𝔨` Mfl `𝔩` Mfm `𝔪` Mfn `𝔫` Mfo `𝔬` Mfp `𝔭` Mfq `𝔮` Mfr `𝔯` Mfs `𝔰` Mft `𝔱` Mfu `𝔲` Mfv `𝔳` Mfw `𝔴` Mfx `𝔵` Mfy `𝔶` Mfz `𝔷`

Some ISO8859-1 characters

 ! `¡` cent `¢` brokenbar `¦` degree `°` ? `¿` ^a_ `ª` ^o_ `º`

Circled, parenthesised etc. numbers and letters

 (0) `⓪` (1) `⑴①⒈❶➀➊` (2) `⑵②⒉❷➁➋` (3) `⑶③⒊❸➂➌` (4) `⑷④⒋❹➃➍` (5) `⑸⑤⒌❺➄➎` (6) `⑹⑥⒍❻➅➏` (7) `⑺⑦⒎❼➆➐` (8) `⑻⑧⒏❽➇➑` (9) `⑼⑨⒐❾➈➒` (10) `⑽⑩⒑❿➉➓` (11) `⑾⑪⒒` (12) `⑿⑫⒓` (13) `⒀⑬⒔` (14) `⒁⑭⒕` (15) `⒂⑮⒖` (16) `⒃⑯⒗` (17) `⒄⑰⒘` (18) `⒅⑱⒙` (19) `⒆⑲⒚` (20) `⒇⑳⒛`
 (a) `⒜Ⓐⓐ` (b) `⒝Ⓑⓑ` (c) `⒞Ⓒⓒ` (d) `⒟Ⓓⓓ` (e) `⒠Ⓔⓔ` (f) `⒡Ⓕⓕ` (g) `⒢Ⓖⓖ` (h) `⒣Ⓗⓗ` (i) `⒤Ⓘⓘ` (j) `⒥Ⓙⓙ` (k) `⒦Ⓚⓚ` (l) `⒧Ⓛⓛ` (m) `⒨Ⓜⓜ` (n) `⒩Ⓝⓝ` (o) `⒪Ⓞⓞ` (p) `⒫Ⓟⓟ` (q) `⒬Ⓠⓠ` (r) `⒭Ⓡⓡ` (s) `⒮Ⓢⓢ` (t) `⒯Ⓣⓣ` (u) `⒰Ⓤⓤ` (v) `⒱Ⓥⓥ` (w) `⒲Ⓦⓦ` (x) `⒳Ⓧⓧ` (y) `⒴Ⓨⓨ` (z) `⒵Ⓩⓩ`