Pith Number

pith:2FOFAQVH

pith:2019:2FOFAQVHOL7PR5IWOKVXJ2ZBOM

not attested not anchored not stored refs pending

Remarks on the distribution of colors in Gallai colorings

Joseph Feffer, Jun Yan, Yaoying Fu

arxiv:1910.13623 v2 · 2019-10-30 · 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{2FOFAQVHOL7PR5IWOKVXJ2ZBOM}

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	2026-07-05T01:29:01.358037Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d15c5042a772fef8f51672ab74eb217300db33a15bd5bde505f6ebed3477488b

Aliases

arxiv: 1910.13623 · arxiv_version: 1910.13623v2 · doi: 10.48550/arxiv.1910.13623 · pith_short_12: 2FOFAQVHOL7P · pith_short_16: 2FOFAQVHOL7PR5IW · pith_short_8: 2FOFAQVH

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/2FOFAQVHOL7PR5IWOKVXJ2ZBOM \
  | 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: d15c5042a772fef8f51672ab74eb217300db33a15bd5bde505f6ebed3477488b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "243f7404f4892ba416e20ee6b96d42fa35a4c41bb822959f8d233566116f961f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-10-30T02:07:12Z",
    "title_canon_sha256": "fe1e0ec0ac542e82b66563ad87403724418cb567d0cf3395b2c935bdb89bfbc8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1910.13623",
    "kind": "arxiv",
    "version": 2
  }
}