Pith Number

pith:QNCHA3HY

pith:2007:QNCHA3HYYAK2TXJJLXARIH7SC7

not attested not anchored not stored refs pending

Semi-local string comparison: algorithmic techniques and applications

Alexander Tiskin

arxiv:0707.3619 v21 · 2007-07-24 · cs.DS · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QNCHA3HYYAK2TXJJLXARIH7SC7}

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	2026-05-18T02:24:57.969570Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8344706cf8c015a9dd295dc1141ff217fef8445fe10ffbe4dd88989d2a636902

Aliases

arxiv: 0707.3619 · arxiv_version: 0707.3619v21 · doi: 10.48550/arxiv.0707.3619 · pith_short_12: QNCHA3HYYAK2 · pith_short_16: QNCHA3HYYAK2TXJJ · pith_short_8: QNCHA3HY

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/QNCHA3HYYAK2TXJJLXARIH7SC7 \
  | 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: 8344706cf8c015a9dd295dc1141ff217fef8445fe10ffbe4dd88989d2a636902

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7a01de3cfb0d1eb6553a9f622059fd42460cc2a1845933ce111f7d63a00c5f7",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2007-07-24T19:12:23Z",
    "title_canon_sha256": "bff3c4483d36cc68b930d76c1ce4a44fdb5d8db2873a9976acd14aca5771c5fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0707.3619",
    "kind": "arxiv",
    "version": 21
  }
}