Pith Number

pith:IHAU5DW2

pith:2015:IHAU5DW2DKNWT26RC633WG4WTA

not attested not anchored not stored refs pending

Reachability analysis of first-order definable pushdown systems

Lorenzo Clemente, S{\l}awomir Lasota

arxiv:1504.02651 v2 · 2015-04-10 · cs.FL · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IHAU5DW2DKNWT26RC633WG4WTA}

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	2026-05-18T01:36:43.234743Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

41c14e8eda1a9b69ebd117b7bb1b9698003b5f5f9ccb9f789f89c15b6ad6a649

Aliases

arxiv: 1504.02651 · arxiv_version: 1504.02651v2 · doi: 10.48550/arxiv.1504.02651 · pith_short_12: IHAU5DW2DKNW · pith_short_16: IHAU5DW2DKNWT26R · pith_short_8: IHAU5DW2

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/IHAU5DW2DKNWT26RC633WG4WTA \
  | 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: 41c14e8eda1a9b69ebd117b7bb1b9698003b5f5f9ccb9f789f89c15b6ad6a649

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d7ea77997ccdb4b40af440603658037328da76727e4e1f0426a34805d39d0b3",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2015-04-10T12:14:28Z",
    "title_canon_sha256": "b7f2f564bbf3dcab9b260e9aa6e7d1c24d957bd55899a2c8a2ba4c481ea2492a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.02651",
    "kind": "arxiv",
    "version": 2
  }
}