Pith Number

pith:TJSILT6L

pith:2019:TJSILT6LRYQTUI5BPLKOTYPQ6C

not attested not anchored not stored refs pending

True Parallel Graph Transformations: an Algebraic Approach Based on Weak Spans

Rachid Echahed, Thierry Boy de la Tour

arxiv:1904.08850 v1 · 2019-04-17 · cs.LO · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TJSILT6LRYQTUI5BPLKOTYPQ6C}

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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	2026-05-17T23:48:12.762467Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a6485cfcb8e213a23a17ad4e9e1f0f09c13daafc8e8dcb27bbd2333de4e9196

Aliases

arxiv: 1904.08850 · arxiv_version: 1904.08850v1 · doi: 10.48550/arxiv.1904.08850 · pith_short_12: TJSILT6LRYQT · pith_short_16: TJSILT6LRYQTUI5B · pith_short_8: TJSILT6L

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/TJSILT6LRYQTUI5BPLKOTYPQ6C \
  | 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: 9a6485cfcb8e213a23a17ad4e9e1f0f09c13daafc8e8dcb27bbd2333de4e9196

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87f2ef4d9f3114af39e4c4b78c3bcc23b14de1d052f9ccbde29543027c4d3ca5",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2019-04-17T14:21:43Z",
    "title_canon_sha256": "c8994a60f92abb8f2b360e476480e52d1dcad7282be46054cc5ed4f5fb909218"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.08850",
    "kind": "arxiv",
    "version": 1
  }
}