Pith Number

pith:XRDUHFX5

pith:2017:XRDUHFX5A5ZBV2EQLI35KJFMGD

not attested not anchored not stored refs pending

An exact algorithm exhibiting RS-RSB/easy-hard correspondence for the maximum independent set problem

Jun Takahashi, Koji Hukushima, Satoshi Takabe

arxiv:1704.06899 v1 · 2017-04-23 · cond-mat.dis-nn · cond-mat.stat-mech · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XRDUHFX5A5ZBV2EQLI35KJFMGD}

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	2026-05-18T00:38:55.195297Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc474396fd07721ae8905a37d524ac30f5c3348482f84010fdacb32b2a503805

Aliases

arxiv: 1704.06899 · arxiv_version: 1704.06899v1 · doi: 10.48550/arxiv.1704.06899 · pith_short_12: XRDUHFX5A5ZB · pith_short_16: XRDUHFX5A5ZBV2EQ · pith_short_8: XRDUHFX5

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/XRDUHFX5A5ZBV2EQLI35KJFMGD \
  | 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: bc474396fd07721ae8905a37d524ac30f5c3348482f84010fdacb32b2a503805

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e466d1a278b83a035df7d2a81f8f014cc22f93ff04a433c2e491f4aba5b5b418",
    "cross_cats_sorted": [
      "cond-mat.stat-mech",
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.dis-nn",
    "submitted_at": "2017-04-23T08:48:04Z",
    "title_canon_sha256": "2c122a3201527e0ef662c2c18d75f0cb72e8c60d508c8720bc0200514f5fc110"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.06899",
    "kind": "arxiv",
    "version": 1
  }
}