Pith Number

pith:7B7A75IZ

pith:2015:7B7A75IZNT56HK6PHUFS7DWAMW

not attested not anchored not stored refs pending

A Comparison of Approaches for Solving Hard Graph-Theoretic Problems

Stanley Bak, Steve Adachi, Victoria Horan

arxiv:1504.08011 v2 · 2015-04-29 · cs.DS · cs.DM · math.CO · quant-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7B7A75IZNT56HK6PHUFS7DWAMW}

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	2026-05-18T01:24:10.862714Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f87e0ff5196cfbe3abcf3d0b2f8ec06583dd24620889b4730e66ceed2a2446ff

Aliases

arxiv: 1504.08011 · arxiv_version: 1504.08011v2 · doi: 10.48550/arxiv.1504.08011 · pith_short_12: 7B7A75IZNT56 · pith_short_16: 7B7A75IZNT56HK6P · pith_short_8: 7B7A75IZ

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/7B7A75IZNT56HK6PHUFS7DWAMW \
  | 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: f87e0ff5196cfbe3abcf3d0b2f8ec06583dd24620889b4730e66ceed2a2446ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4dfef954e9943ef4ddfab1879c82daae1ec9cdd2cdc76f17d22f3d3345797bf8",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO",
      "quant-ph"
    ],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-04-29T20:22:12Z",
    "title_canon_sha256": "3a706fa1e622301ad587d9b691e6b847c07665ff32909b9c86bb340a496a0e2d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.08011",
    "kind": "arxiv",
    "version": 2
  }
}