Pith Number

pith:FEGOX7WN

pith:2007:FEGOX7WN4RTY5WO4KC6JNKKLEV

not attested not anchored not stored refs pending

A characterization of fine words over a finite alphabet

Amy Glen

arxiv:0708.4406 v1 · 2007-08-31 · math.CO · cs.DM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FEGOX7WN4RTY5WO4KC6JNKKLEV}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-04T17:23:15.794899Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

290cebfecde4678ed9dc50bc96a94b257ba7f9a0f2eb1f2ae6573618278a183b

Aliases

arxiv: 0708.4406 · arxiv_version: 0708.4406v1 · doi: 10.48550/arxiv.0708.4406 · pith_short_12: FEGOX7WN4RTY · pith_short_16: FEGOX7WN4RTY5WO4 · pith_short_8: FEGOX7WN

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/FEGOX7WN4RTY5WO4KC6JNKKLEV \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 290cebfecde4678ed9dc50bc96a94b257ba7f9a0f2eb1f2ae6573618278a183b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7244390dd197285e773e11c71bd19051ef173731b3034dc57178ce8e8eb24fc",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "",
    "primary_cat": "math.CO",
    "submitted_at": "2007-08-31T18:34:41Z",
    "title_canon_sha256": "e110a663ac36cab036ada6c865c644348e7363bd331f69c1a74d78f0c9ad2f8c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0708.4406",
    "kind": "arxiv",
    "version": 1
  }
}