EmbeddedMath

An EmbeddedMath node wraps a Plurimath::Math::Formula so chemistry publications can embed mathematics (K_c = [P]/[R], rate laws, Arrhenius) without AsciiChem reinventing math typography.

Fields

Field	Type	Description
`formula`	Plurimath::Math::Formula	The parsed math expression
`source`	String	The original backtick-wrapped text

Diagram

   `\`K_c = [P]/[R]\``  ──►  Grammar captures `math_source`
                                          │
                                          ▼
                              Plurimath::Asciimath.new(source).to_formula
                                          │
                                          ▼
                                   EmbeddedMath
                                   ├── formula: <Plurimath::Formula>
                                   └── source:  "K_c = [P]/[R]"

Grammar production

embedded_math := "`" math_source "`"
math_source   := (any character except backtick)*

The grammar captures the run as raw text. The transform passes it verbatim to Plurimath::Asciimath.new(source).to_formula.

Why Plurimath?

AsciiChem doesn’t reinvent math typography. Plurimath already handles AsciiMath, LaTeX, UnicodeMath, OMML, and MathML with the same model-driven architecture. Reusing it keeps AsciiChem focused on chemistry.

Formatter behaviour

Formatter	Output
MathML	The wrapped formula’s `.to_mathml`, with outer `<math>` stripped so the fragment slots into AsciiChem’s `<mrow>`
Text	The backtick-wrapped source verbatim
HTML	The wrapped formula’s `.to_mathml` (browsers render MathML natively)
LaTeX	$<formula.to_latex>$ (math mode inside `\ce{}`)
SVG	The source as text (v1 fallback)

Round-trip

source = "`K_c = [P]/[R]`"
formula = AsciiChem.parse(source)
formula.to_text                  # => "`K_c = [P]/[R]`" (verbatim)
formula.nodes.first.formula      # => <Plurimath::Math::Formula>
formula.nodes.first.source       # => "K_c = [P]/[R]"

Combined chemistry + math

A formula can mix chemistry and embedded math:

H_2 + I_2 <=> 2HI `K_c = [HI]^2 / ([H_2][I_2])`

H_{2} + I_{2} ⇌ 2 H I K_{c} = \frac{{[H I]}^{2}}{[H_{2}] [I_{2}]}

parses as [Reaction, Text(" "), EmbeddedMath].

Limitations

Backticks cannot be nested in v1. Use Plurimath’s native syntax for complex expressions.
Whitespace inside the backticks is preserved verbatim.