Pith Number

pith:FTRFMWQS

pith:2020:FTRFMWQSGPDXGFED4A5PAFHXAA

not attested not anchored not stored refs pending

Grundy Coloring & friends, Half-Graphs, Bicliques

\'Edouard Bonnet, Eun Jung Kim, Florian Sikora, Pierre Aboulker

arxiv:2001.03794 v1 · 2020-01-11 · cs.CC · cs.DM · cs.DS · 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{FTRFMWQSGPDXGFED4A5PAFHXAA}

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	2026-07-05T00:32:56.040659Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ce2565a1233c7731483e03af014f7000e6dd636a2697c4eb53e5b926c3d22c7

Aliases

arxiv: 2001.03794 · arxiv_version: 2001.03794v1 · doi: 10.48550/arxiv.2001.03794 · pith_short_12: FTRFMWQSGPDX · pith_short_16: FTRFMWQSGPDXGFED · pith_short_8: FTRFMWQS

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/FTRFMWQSGPDXGFED4A5PAFHXAA \
  | 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: 2ce2565a1233c7731483e03af014f7000e6dd636a2697c4eb53e5b926c3d22c7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "11b9596fb8dfd27c34d46820c147d169c8be196fb066565e5380b5bb4bfe3328",
    "cross_cats_sorted": [
      "cs.DM",
      "cs.DS",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2020-01-11T20:17:11Z",
    "title_canon_sha256": "4f1bfbdba538f9d535cdbc133627af18d1311303c4bfc65a55ecc66c4989ffa4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.03794",
    "kind": "arxiv",
    "version": 1
  }
}