Pith Number

pith:QVSOKJKE

pith:2025:QVSOKJKEVD3RZOZEEP2WHFLPYQ

not attested not anchored not stored refs pending

Hoffman colorability of (strongly) regular graphs

Aida Abiad, Bart De Bruyn, Thijs van Veluw

arxiv:2508.18793 v1 · 2025-08-26 · 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{QVSOKJKEVD3RZOZEEP2WHFLPYQ}

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.

Cited by

1 paper in Pith

A graph energy conjecture through the lenses of semidefinite programming

Receipt and verification

First computed	2026-07-05T11:59:31.139887Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8564e52544a8f71cbb2423f563956fc4395039b633ef777a2539fe7a14bc99dd

Aliases

arxiv: 2508.18793 · arxiv_version: 2508.18793v1 · doi: 10.48550/arxiv.2508.18793 · pith_short_12: QVSOKJKEVD3R · pith_short_16: QVSOKJKEVD3RZOZE · pith_short_8: QVSOKJKE

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/QVSOKJKEVD3RZOZEEP2WHFLPYQ \
  | 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: 8564e52544a8f71cbb2423f563956fc4395039b633ef777a2539fe7a14bc99dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90a01e0c6bb449863489204e1dbeea01e33d21b4d851976afbcaad0601207581",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2025-08-26T08:18:28Z",
    "title_canon_sha256": "44e1508f45d7856bd6ca597b193fe8b13d74c69838ffd6d3c62073e2f15b8a76"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.18793",
    "kind": "arxiv",
    "version": 1
  }
}