Pith Number

pith:7RSAGGP7

pith:2014:7RSAGGP74DM4EFIMLWIF2VDXV2

not attested not anchored not stored refs pending

On (4,2)-Choosable Graphs

Gregory J. Puleo, Jixian Meng, Xuding Zhu

arxiv:1404.6821 v3 · 2014-04-27 · 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{7RSAGGP74DM4EFIMLWIF2VDXV2}

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	2026-05-18T00:33:44.370330Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc640319ffe0d9c2150c5d905d5477ae8ad8e6628bfa9313609b479660779b17

Aliases

arxiv: 1404.6821 · arxiv_version: 1404.6821v3 · doi: 10.48550/arxiv.1404.6821 · pith_short_12: 7RSAGGP74DM4 · pith_short_16: 7RSAGGP74DM4EFIM · pith_short_8: 7RSAGGP7

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/7RSAGGP74DM4EFIMLWIF2VDXV2 \
  | 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: fc640319ffe0d9c2150c5d905d5477ae8ad8e6628bfa9313609b479660779b17

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d275641f790bc64a71bb18f811b479d1f969e1e7f7a1972e6a168369f039bb3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-04-27T20:25:15Z",
    "title_canon_sha256": "aa6b9422730469c2de5bd76f9feab5a0f01e3890c03b4f833b4961da2c424c0e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.6821",
    "kind": "arxiv",
    "version": 3
  }
}