Pith Number

pith:UGREWWPX

pith:2019:UGREWWPXHZOKOVJTUFMICW43TU

not attested not anchored not stored refs pending

A New Fast Computation of a Permanent

Jianghua Zheng, Shenghui Su, Shuwang L\"u, Xuewei Niu

arxiv:1908.06371 v2 · 2019-08-18 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UGREWWPXHZOKOVJTUFMICW43TU}

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	2026-07-05T01:25:22.379995Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a1a24b59f73e5ca75533a158815b9b9d16391809efff4c2a5d9e22baed946a3f

Aliases

arxiv: 1908.06371 · arxiv_version: 1908.06371v2 · doi: 10.48550/arxiv.1908.06371 · pith_short_12: UGREWWPXHZOK · pith_short_16: UGREWWPXHZOKOVJT · pith_short_8: UGREWWPX

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/UGREWWPXHZOKOVJTUFMICW43TU \
  | 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: a1a24b59f73e5ca75533a158815b9b9d16391809efff4c2a5d9e22baed946a3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "898b270681f5813e28f4a692c070490bd13ce48bfb61b0ed839e1c8bd628a20d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2019-08-18T04:02:26Z",
    "title_canon_sha256": "a80bdced328946681a119551c37c9685bf95709724a527a37eb754a52d884a51"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.06371",
    "kind": "arxiv",
    "version": 2
  }
}