Pith Number

pith:WHOCPCSP

pith:2015:WHOCPCSPWGRVSQVNJEIUHVJFHK

not attested not anchored not stored refs pending

Trees with small b-chromatic index

Ana Silva

arxiv:1511.05847 v1 · 2015-11-18 · 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{WHOCPCSPWGRVSQVNJEIUHVJFHK}

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	2026-05-18T01:26:32.459172Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b1dc278a4fb1a35942ad491143d5253a8a8791135836c31916162f6e3746c530

Aliases

arxiv: 1511.05847 · arxiv_version: 1511.05847v1 · doi: 10.48550/arxiv.1511.05847 · pith_short_12: WHOCPCSPWGRV · pith_short_16: WHOCPCSPWGRVSQVN · pith_short_8: WHOCPCSP

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/WHOCPCSPWGRVSQVNJEIUHVJFHK \
  | 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: b1dc278a4fb1a35942ad491143d5253a8a8791135836c31916162f6e3746c530

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f756d6c8459557edf6736fa3f70fd183f750f9148a25ab9d9fd35c6fb617d5c3",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2015-11-18T15:56:21Z",
    "title_canon_sha256": "7c884f6800809f551bfaa20a7e0bfbe048c3b92619144f1dff3e6079caf4b12d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.05847",
    "kind": "arxiv",
    "version": 1
  }
}