Pith Number

pith:RCP7FMFW

pith:2018:RCP7FMFW2OPM6V6YALKU3DSVE7

not attested not anchored not stored refs pending

Generalized Fitch Graphs: Edge-labeled Graphs that are explained by Edge-labeled Trees

Marc Hellmuth

arxiv:1802.03657 v2 · 2018-02-10 · cs.DM · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RCP7FMFW2OPM6V6YALKU3DSVE7}

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	2026-05-18T00:17:32.794464Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

889ff2b0b6d39ecf57d802d54d8e5527e4a425d928e8e9f4076330a8eee7f571

Aliases

arxiv: 1802.03657 · arxiv_version: 1802.03657v2 · doi: 10.48550/arxiv.1802.03657 · pith_short_12: RCP7FMFW2OPM · pith_short_16: RCP7FMFW2OPM6V6Y · pith_short_8: RCP7FMFW

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/RCP7FMFW2OPM6V6YALKU3DSVE7 \
  | 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: 889ff2b0b6d39ecf57d802d54d8e5527e4a425d928e8e9f4076330a8eee7f571

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ce4ce658565d42c9992a9a1a6719fdee0b444544d8a332cbc31a05a076ab934",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2018-02-10T22:36:21Z",
    "title_canon_sha256": "d7a1dd8239f21d44c9d32b2a171c81ec417470037eaf6b4fe2f5dc4b16c569f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.03657",
    "kind": "arxiv",
    "version": 2
  }
}