👁 DLMF NIST Math Functions Scraper avatar

DLMF NIST Math Functions Scraper

Pricing

Pay per event

DLMF NIST Math Functions Scraper

Scrapes the NIST Digital Library of Mathematical Functions (DLMF) for structured equation data: MathML, LaTeX source, constraints, and referenced functions — across all 36 chapters and hundreds of sections.

Pricing

Pay per event

Rating

0.0

(0)

Developer

👁 BowTiedRaccoon

BowTiedRaccoon

Maintained by Community

Actor stats

Bookmarked

Total users

Monthly active users

18 days ago

Last modified

What it does

The actor performs a three-level hierarchical crawl:

Index — discovers all 36 DLMF chapters from the homepage
Chapter pages — discovers all sections within each chapter (typically 10–20 sections)
Section pages — extracts every numbered equation including MathML, LaTeX TeX source, plain-text rendering, referenced symbols, and the canonical permalink

Across all 36 chapters the DLMF contains approximately 5,000–10,000 numbered equations. A full crawl completes in minutes at the default concurrency.

Output fields

Field	Description
`chapter`	Chapter number (integer, 1–36)
`section`	Section identifier, e.g. `1.2`
`title`	Section title, e.g. `Elementary Algebra`
`equation_number`	DLMF equation number, e.g. `1.2.1`
`equation_mathml`	Full MathML XML for the equation
`equation_tex`	LaTeX source recovered from MathML `alttext` attribute
`equation_text`	Unicode plain-text rendering of the equation
`constraints`	Constraint text associated with the equation (if any)
`referenced_functions`	Pipe-separated list of symbol/function names referenced
`url`	Canonical DLMF permalink, e.g. `http://dlmf.nist.gov/1.2.E1`

Use cases

Symbolic math / CAS training data — verified special-function formulas with LaTeX and MathML
RAG / vector search corpora — ground-truth equation database for scientific-computing AI agents
Formula search engines — structured index of equations by chapter/section with canonical IDs
Verification datasets — NIST-authoritative identities for function evaluations

Input parameters

Parameter	Type	Default	Description
`maxItems`	integer	10	Maximum number of equations to scrape (0 = unlimited)
`startChapter`	integer	1	First chapter to crawl (1–36)
`endChapter`	integer	36	Last chapter to crawl (1–36, omit for all)

Example output record

{
"chapter":1,
"section":"1.2",
"title":"Elementary Algebra",
"equation_number":"1.2.1",
"equation_tex":"\\genfrac{(}{)}{0.0pt}{}{n}{k}=\\frac{n!}{(n-k)!k!}",
"equation_text":"(nk)=n!/(n−k)!⁢k!",
"constraints":"",
"referenced_functions":"(mn): binomial coefficient | !: factorial (as in n!) | n: nonnegative integer",
"url":"http://dlmf.nist.gov/1.2.E1"
}

Notes

The DLMF is a US government publication (NIST). Content is in the public domain.
No proxy required — dlmf.nist.gov is a clean US gov host with no anti-bot measures.
Chapter 1 alone contains ~180 equations across 18 sections. Full 36-chapter run yields ~5,000+ records.
Sections containing only notation tables (no numbered equations) return 0 results — this is expected.

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