Pith Number

pith:7YKIKM3N

pith:2018:7YKIKM3NBQ4BRGQUTM4EPQ7EWI

not attested not anchored not stored refs pending

Formalization and Correctness of Predictive Shift-Reduce Parsers for Graph Grammars based on Hyperedge Replacement

Berthold Hoffmann, Frank Drewes, Mark Minas

arxiv:1812.11927 v2 · 2018-12-31 · 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{7YKIKM3NBQ4BRGQUTM4EPQ7EWI}

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	2026-05-17T23:51:41.850857Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe1485336d0c38189a149b3847c3e4b22a7b92e7341b1aedd9be5178f57d4d90

Aliases

arxiv: 1812.11927 · arxiv_version: 1812.11927v2 · doi: 10.48550/arxiv.1812.11927 · pith_short_12: 7YKIKM3NBQ4B · pith_short_16: 7YKIKM3NBQ4BRGQU · pith_short_8: 7YKIKM3N

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/7YKIKM3NBQ4BRGQUTM4EPQ7EWI \
  | 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: fe1485336d0c38189a149b3847c3e4b22a7b92e7341b1aedd9be5178f57d4d90

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26cbf453ccc41ced4c387b88ec2df113ba9538ab9d6be54b6c6b23ba80a32d75",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2018-12-31T18:10:37Z",
    "title_canon_sha256": "3881064e30f581a534bd217b3812bc360d78c950ec4ac4454aff6156ecc7ae26"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.11927",
    "kind": "arxiv",
    "version": 2
  }
}