Pith Number

pith:RYU5KZ4G

pith:2019:RYU5KZ4GFXVFJKVT2DXDDT6TKJ

not attested not anchored not stored refs pending

Polynomial Invariant Generation for Non-deterministic Recursive Programs

Amir Kafshdar Goharshady, Ehsan Kafshdar Goharshady, Hongfei Fu, Krishnendu Chatterjee

arxiv:1902.04373 v3 · 2019-02-12 · cs.LO · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RYU5KZ4GFXVFJKVT2DXDDT6TKJ}

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	2026-07-05T00:52:45.340665Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e29d567862dea54aab3d0ee31cfd35276b8c19a45b20b81a547aa0744038ccb

Aliases

arxiv: 1902.04373 · arxiv_version: 1902.04373v3 · doi: 10.48550/arxiv.1902.04373 · pith_short_12: RYU5KZ4GFXVF · pith_short_16: RYU5KZ4GFXVFJKVT · pith_short_8: RYU5KZ4G

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/RYU5KZ4GFXVFJKVT2DXDDT6TKJ \
  | 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: 8e29d567862dea54aab3d0ee31cfd35276b8c19a45b20b81a547aa0744038ccb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02b1e7e6cd251ff475e98affade23a5f6d0531f091e724a72d9cb838646806d3",
    "cross_cats_sorted": [
      "cs.PL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2019-02-12T13:17:25Z",
    "title_canon_sha256": "ef4361b90a4d4430a7ed8dc22b65c3164e235cfb531382583a079523e1c99071"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.04373",
    "kind": "arxiv",
    "version": 3
  }
}