Pith Number

pith:DX64VDAU

pith:2010:DX64VDAULNGEDIAQFDPEJEC2HJ

not attested not anchored not stored refs pending

Regular Expressions, au point

Andrea Asperti, Claudio Sacerdoti Coen, Enrico Tassi

arxiv:1010.2604 v1 · 2010-10-13 · 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{DX64VDAULNGEDIAQFDPEJEC2HJ}

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	2026-05-18T04:39:27.235125Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1dfdca8c145b4c41a01028de44905a3a537b496132380372c6ac3c0f646828de

Aliases

arxiv: 1010.2604 · arxiv_version: 1010.2604v1 · doi: 10.48550/arxiv.1010.2604 · pith_short_12: DX64VDAULNGE · pith_short_16: DX64VDAULNGEDIAQ · pith_short_8: DX64VDAU

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/DX64VDAULNGEDIAQFDPEJEC2HJ \
  | 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: 1dfdca8c145b4c41a01028de44905a3a537b496132380372c6ac3c0f646828de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f17939df7ae11dfe615ee88de2ffde4164b50e994f47e5c8cfdbb5e0b08e322f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2010-10-13T09:07:13Z",
    "title_canon_sha256": "cd3ac98c8e054bb878874fa096b874f25ba11a7c656fcae01a117af99d7659dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.2604",
    "kind": "arxiv",
    "version": 1
  }
}