HTML entities

Maths on the Web is a problem – html entities can provide a limited range of symbols – and I like the immediacy of a blogging approach to Maths. Else it is down to PDFs, or scans, or Whiteboard captures, all of which are clunky and take time and reduce the directness of the blog approach. One day we will move past the ‘glass teletype’ and have some rich symbols.

As you can see in the table below, the WordPress script isn’t picking up the instructions to display the entity mark-up without encoding it. Just ‘view source’ to see the codes. The original table does render the entity codes.

Basically you can do ⟨ α | H | δ ⟩ and √ (a2 + b2) easily but fractions are not widely supported.

Character Entity Decimal Hex Rendering in Your Browser
Entity Decimal Hex
Latin small f with hook = function = florin ƒ ƒ ƒ ƒ ƒ ƒ
Greek capital letter alpha Α Α Α Α Α Α
Greek capital letter beta Β Β Β Β Β Β
Greek capital letter gamma Γ Γ Γ Γ Γ Γ
Greek capital letter delta Δ Δ Δ Δ Δ Δ
Greek capital letter epsilon Ε Ε Ε Ε Ε Ε
Greek capital letter zeta Ζ Ζ Ζ Ζ Ζ Ζ
Greek capital letter eta Η Η Η Η Η Η
Greek capital letter theta Θ Θ Θ Θ Θ Θ
Greek capital letter iota Ι Ι Ι Ι Ι Ι
Greek capital letter kappa Κ Κ Κ Κ Κ Κ
Greek capital letter lambda Λ Λ Λ Λ Λ Λ
Greek capital letter mu Μ Μ Μ Μ Μ Μ
Greek capital letter nu Ν Ν Ν Ν Ν Ν
Greek capital letter xi Ξ Ξ Ξ Ξ Ξ Ξ
Greek capital letter omicron Ο Ο Ο Ο Ο Ο
Greek capital letter pi Π Π Π Π Π Π
Greek capital letter rho Ρ Ρ Ρ Ρ Ρ Ρ
Greek capital letter sigma Σ Σ Σ Σ Σ Σ
Greek capital letter tau Τ Τ Τ Τ Τ Τ
Greek capital letter upsilon Υ Υ Υ Υ Υ Υ
Greek capital letter phi Φ Φ Φ Φ Φ Φ
Greek capital letter chi Χ Χ Χ Χ Χ Χ
Greek capital letter psi Ψ Ψ Ψ Ψ Ψ Ψ
Greek capital letter omega Ω Ω Ω Ω Ω Ω
Greek small letter alpha α α α α α α
Greek small letter beta β β β β β β
Greek small letter gamma γ γ γ γ γ γ
Greek small letter delta δ δ δ δ δ δ
Greek small letter epsilon ε ε ε ε ε ε
Greek small letter zeta ζ ζ ζ ζ ζ ζ
Greek small letter eta η η η η η η
Greek small letter theta θ θ θ θ θ θ
Greek small letter iota ι ι ι ι ι ι
Greek small letter kappa κ κ κ κ κ κ
Greek small letter lambda λ λ λ λ λ λ
Greek small letter mu μ μ μ μ μ μ
Greek small letter nu ν ν ν ν ν ν
Greek small letter xi ξ ξ ξ ξ ξ ξ
Greek small letter omicron ο ο ο ο ο ο
Greek small letter pi π π π π π π
Greek small letter rho ρ ρ ρ ρ ρ ρ
Greek small letter final sigma ς ς ς ς ς ς
Greek small letter sigma σ σ σ σ σ σ
Greek small letter tau τ τ τ τ τ τ
Greek small letter upsilon υ υ υ υ υ υ
Greek small letter phi φ φ φ φ φ φ
Greek small letter chi χ χ χ χ χ χ
Greek small letter psi ψ ψ ψ ψ ψ ψ
Greek small letter omega ω ω ω ω ω ω
Greek small letter theta symbol ϑ ϑ ϑ ϑ ϑ ϑ
Greek upsilon with hook symbol ϒ ϒ ϒ ϒ ϒ ϒ
Greek pi symbol ϖ ϖ ϖ ϖ ϖ ϖ
bullet = black small circle
horizontal ellipsis = three dot leader
prime = minutes = feet
double prime = seconds = inches
overline = spacing overscore
fraction slash
script capital P = power set = Weierstrass p
blackletter capital I = imaginary part
blackletter capital R = real part symbol
trade mark sign
alef symbol = first transfinite cardinal
leftwards arrow
upwards arrow
rightwards arrow
downwards arrow
left right arrow
downwards arrow with corner leftwards = carriage return
leftwards double arrow
upwards double arrow
rightwards double arrow
downwards double arrow
left right double arrow
for all
partial differential
there exists
empty set = null set = diameter
nabla = backward difference
element of
not an element of
contains as member
n-ary product = product sign
n-ary sumation
minus sign
asterisk operator
square root = radical sign
proportional to
logical and = wedge
logical or = vee
intersection = cap
union = cup
tilde operator = varies with = similar to
approximately equal to
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
circled plus = direct sum
circled times = vector product
up tack = orthogonal to = perpendicular
dot operator
left ceiling = APL upstile
right ceiling
left floor = APL downstile
right floor
left-pointing angle bracket = bra
right-pointing angle bracket = ket
black spade suit
black club suit = shamrock
black heart suit = valentine
black diamond suit

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