Pith Number

pith:3GXGWAWT

pith:2014:3GXGWAWTMVVYV4HTNZZRS2IZNL

not attested not anchored not stored refs pending

Analyzing Catastrophic Backtracking Behavior in Practical Regular Expression Matching

Brink van der Merwe, Frank Drewes, Martin Berglund

arxiv:1405.5599 v1 · 2014-05-22 · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3GXGWAWTMVVYV4HTNZZRS2IZNL}

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	2026-05-18T02:51:16.250689Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d9ae6b02d3656b8af0f36e731969196ac8ef167c12082eab804c979df6a6e199

Aliases

arxiv: 1405.5599 · arxiv_version: 1405.5599v1 · doi: 10.48550/arxiv.1405.5599 · pith_short_12: 3GXGWAWTMVVY · pith_short_16: 3GXGWAWTMVVYV4HT · pith_short_8: 3GXGWAWT

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/3GXGWAWTMVVYV4HTNZZRS2IZNL \
  | 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: d9ae6b02d3656b8af0f36e731969196ac8ef167c12082eab804c979df6a6e199

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d634258fc5b27d130b10ffa0090fec4d6e24756e79adc4f5d9bacca67f1f910b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2014-05-22T02:12:34Z",
    "title_canon_sha256": "cdfae2fd6fc561c8ecc507657b39f0a8a1277495960e639f3bce47ff0bb4238e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.5599",
    "kind": "arxiv",
    "version": 1
  }
}