Pith Number

pith:BWCKDJRK

pith:2015:BWCKDJRKITDOF2UHWU7W5XM54R

not attested not anchored not stored refs pending

Hedgehogs are not colour blind

David Conlon, Jacob Fox, Vojt\v{e}ch R\"odl

arxiv:1511.00563 v1 · 2015-11-02 · 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{BWCKDJRKITDOF2UHWU7W5XM54R}

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	2026-05-18T01:28:11.982676Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d84a1a62a44c6e2ea87b53f6edd9de47b7b6af1da975528d1e73dc88478c8ed

Aliases

arxiv: 1511.00563 · arxiv_version: 1511.00563v1 · doi: 10.48550/arxiv.1511.00563 · pith_short_12: BWCKDJRKITDO · pith_short_16: BWCKDJRKITDOF2UH · pith_short_8: BWCKDJRK

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/BWCKDJRKITDOF2UHWU7W5XM54R \
  | 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: 0d84a1a62a44c6e2ea87b53f6edd9de47b7b6af1da975528d1e73dc88478c8ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c3b17ccccf1640c0e0044fef9fab68aae646cf7ae4a2bb67eca223e56269f0f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-11-02T15:53:16Z",
    "title_canon_sha256": "b2c9f6e1de0e41e8d1c9fe58ee6d2ae51e320b04b03d0ed9975a13f8ef5a6a1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.00563",
    "kind": "arxiv",
    "version": 1
  }
}