Pith Number

pith:RZ3NJ7AU

pith:2020:RZ3NJ7AU4EPGTCPCE5ZE452BJ5

not attested not anchored not stored refs pending

On 3-Coloring of $(2P_4,C_5)$-Free Graphs

Aneta Pokorn\'a, Jana Novotn\'a, Tereza Klimo\v{s}ov\'a, Tom\'a\v{s} Masa\v{r}\'ik, V\'it Jel\'inek

arxiv:2011.06173 v2 · 2020-11-12 · cs.DS · 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{RZ3NJ7AU4EPGTCPCE5ZE452BJ5}

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	2026-07-05T07:32:14.302681Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e76d4fc14e11e6989e227724e77414f4d4d697cfd872f4e001512ea8412ff21

Aliases

arxiv: 2011.06173 · arxiv_version: 2011.06173v2 · doi: 10.48550/arxiv.2011.06173 · pith_short_12: RZ3NJ7AU4EPG · pith_short_16: RZ3NJ7AU4EPGTCPC · pith_short_8: RZ3NJ7AU

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/RZ3NJ7AU4EPGTCPCE5ZE452BJ5 \
  | 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: 8e76d4fc14e11e6989e227724e77414f4d4d697cfd872f4e001512ea8412ff21

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39ed3aa4109af43b2b1bc19ea65652ad9f665cfc105ad782de49b3ace2334085",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2020-11-12T02:50:00Z",
    "title_canon_sha256": "7451299a784d190397dc1f9d636fff248ac902b06360027763b6bf4f9ee009d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2011.06173",
    "kind": "arxiv",
    "version": 2
  }
}