Pith Number

pith:HDV2UVH5

pith:2015:HDV2UVH5EJPPKGPUS73YD47YVG

not attested not anchored not stored refs pending

A note on coloring (even-hole,cap)-free graphs

Murilo V. G. da Silva, Shenwei Huang

arxiv:1510.09192 v1 · 2015-10-30 · 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{HDV2UVH5EJPPKGPUS73YD47YVG}

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	2026-05-18T01:28:22.352854Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

38ebaa54fd225ef519f497f781f3f8a9bb897035646c5b243aa494ca124038d2

Aliases

arxiv: 1510.09192 · arxiv_version: 1510.09192v1 · doi: 10.48550/arxiv.1510.09192 · pith_short_12: HDV2UVH5EJPP · pith_short_16: HDV2UVH5EJPPKGPU · pith_short_8: HDV2UVH5

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/HDV2UVH5EJPPKGPUS73YD47YVG \
  | 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: 38ebaa54fd225ef519f497f781f3f8a9bb897035646c5b243aa494ca124038d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "911f39fdf105eccf5c04dd1e6683e9036963e0d7727bae6da7af2a74151b4c85",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2015-10-30T18:37:13Z",
    "title_canon_sha256": "e03ab07584a3c2c55d7de30b91cb4764578cb7482d03956742d75ac77c583802"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.09192",
    "kind": "arxiv",
    "version": 1
  }
}