Pith Number

pith:PKPCPXCE

pith:2014:PKPCPXCEW2RWGHEJYPIX4L2KVU

not attested not anchored not stored refs pending

Breadth-first serialisation of trees and rational languages

Jacques Sakarovitch, Victor Marsault

arxiv:1404.0798 v1 · 2014-04-03 · 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{PKPCPXCEW2RWGHEJYPIX4L2KVU}

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	2026-05-18T02:54:55.489635Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a9e27dc44b6a3631c89c3d17e2f4aad10fa6c4160cc10e2a666957338eb64d3

Aliases

arxiv: 1404.0798 · arxiv_version: 1404.0798v1 · doi: 10.48550/arxiv.1404.0798 · pith_short_12: PKPCPXCEW2RW · pith_short_16: PKPCPXCEW2RWGHEJ · pith_short_8: PKPCPXCE

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/PKPCPXCEW2RWGHEJYPIX4L2KVU \
  | 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: 7a9e27dc44b6a3631c89c3d17e2f4aad10fa6c4160cc10e2a666957338eb64d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ecc10afe09afce7735d3d8080cd2cf4b2a6e42faeef24dd6dee3ea34148f30c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2014-04-03T08:26:34Z",
    "title_canon_sha256": "e774420901e0926b883afdb3b615f1f097ec62a34ff705f35f44bf3efb8b88a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.0798",
    "kind": "arxiv",
    "version": 1
  }
}