Pith Number

pith:MMIIW7UP

pith:2013:MMIIW7UPHI7Z6DOSRPR6WEFECX

not attested not anchored not stored refs pending

Spin glass approach to the feedback vertex set problem

Hai-Jun Zhou

arxiv:1307.6948 v2 · 2013-07-26 · cs.CC · cond-mat.dis-nn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MMIIW7UPHI7Z6DOSRPR6WEFECX}

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	2026-05-18T02:53:53.718206Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

63108b7e8f3a3f9f0dd28be3eb10a415dcddcf700398321796a8d4b8ea25bc30

Aliases

arxiv: 1307.6948 · arxiv_version: 1307.6948v2 · doi: 10.48550/arxiv.1307.6948 · pith_short_12: MMIIW7UPHI7Z · pith_short_16: MMIIW7UPHI7Z6DOS · pith_short_8: MMIIW7UP

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/MMIIW7UPHI7Z6DOSRPR6WEFECX \
  | 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: 63108b7e8f3a3f9f0dd28be3eb10a415dcddcf700398321796a8d4b8ea25bc30

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30856fc6e2cba0530d41df924c9a9a02586c0c35fe842be12619f1465e05da02",
    "cross_cats_sorted": [
      "cond-mat.dis-nn"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2013-07-26T08:04:11Z",
    "title_canon_sha256": "88ba93a029e1a0bc687798e5d7d36651ef9c464f05f416c71ebaf325a01ac525"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.6948",
    "kind": "arxiv",
    "version": 2
  }
}