Pith Number

pith:C627SIT5

pith:2021:C627SIT5CEI526U6ND7GI2537Q

not attested not anchored not stored refs pending

Pregroup Grammars, their Syntax and Semantics

Mehrnoosh Sadrzadeh

arxiv:2109.11237 v1 · 2021-09-23 · 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{C627SIT5CEI526U6ND7GI2537Q}

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	2026-07-05T03:16:55.833539Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17b5f9227d1111dd7a9e68fe646bbbfc2d6573f0a6f42d4af2f4672ad3428882

Aliases

arxiv: 2109.11237 · arxiv_version: 2109.11237v1 · doi: 10.48550/arxiv.2109.11237 · pith_short_12: C627SIT5CEI5 · pith_short_16: C627SIT5CEI526U6 · pith_short_8: C627SIT5

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/C627SIT5CEI526U6ND7GI2537Q \
  | 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: 17b5f9227d1111dd7a9e68fe646bbbfc2d6573f0a6f42d4af2f4672ad3428882

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45c059b7f83089785140275b138ae17cb824b83cfd6b31a8f7c3e5eeeabe3c1d",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2021-09-23T09:26:05Z",
    "title_canon_sha256": "1aa566d94537cd35bb181e9107849215ac5feb7df8bc1319139785114a15bded"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.11237",
    "kind": "arxiv",
    "version": 1
  }
}