Pith Number

pith:5EAGTJR5

pith:2019:5EAGTJR5IM6HE7NR4D6WNDCX7L

not attested not anchored not stored refs pending

On counting functions and slenderness of languages

Bala Ravikumar, Ian McQuillan, Oscar H. Ibarra

arxiv:1903.03504 v1 · 2019-03-08 · 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{5EAGTJR5IM6HE7NR4D6WNDCX7L}

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	2026-05-17T23:51:45.316195Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e90069a63d433c727db1e0fd668c57fac615b643e71b419d9c5165a8b31af9bd

Aliases

arxiv: 1903.03504 · arxiv_version: 1903.03504v1 · doi: 10.48550/arxiv.1903.03504 · pith_short_12: 5EAGTJR5IM6H · pith_short_16: 5EAGTJR5IM6HE7NR · pith_short_8: 5EAGTJR5

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/5EAGTJR5IM6HE7NR4D6WNDCX7L \
  | 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: e90069a63d433c727db1e0fd668c57fac615b643e71b419d9c5165a8b31af9bd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e35e8b77e30df42b1e9f5c7a06491b2993d1dcb78f2ba85ad3c12ee493b0f40",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2019-03-08T15:31:31Z",
    "title_canon_sha256": "95c17e5d6db4d7c31fd8f8e2eca5d03829b4eb75b9c434090f425f25b365c0f5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.03504",
    "kind": "arxiv",
    "version": 1
  }
}