Pith Number

pith:2QXCSRNL

pith:2016:2QXCSRNLT7X5NC5SPUGYTS2R5B

not attested not anchored not stored refs pending

Complexity Hierarchies and Higher-Order Cons-Free Rewriting

Cynthia Kop, Jakob Grue Simonsen

arxiv:1604.08936 v1 · 2016-04-29 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2QXCSRNLT7X5NC5SPUGYTS2R5B}

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	2026-05-18T01:16:01.368114Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d42e2945ab9fefd68bb27d0d89cb51e8468839d6ad2cd2ac2dba19a81f868c7b

Aliases

arxiv: 1604.08936 · arxiv_version: 1604.08936v1 · doi: 10.48550/arxiv.1604.08936 · pith_short_12: 2QXCSRNLT7X5 · pith_short_16: 2QXCSRNLT7X5NC5S · pith_short_8: 2QXCSRNL

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/2QXCSRNLT7X5NC5SPUGYTS2R5B \
  | 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: d42e2945ab9fefd68bb27d0d89cb51e8468839d6ad2cd2ac2dba19a81f868c7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3f9f36f56f73355d8fce1fae20d56eb6407e08f0b33db6681bd5cb764f8d3a5d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2016-04-29T19:06:07Z",
    "title_canon_sha256": "42257fc11dbefa7ddc2cf2d7413208a5f2dd3bc4402fbbfb4fc0c2e22ec59564"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.08936",
    "kind": "arxiv",
    "version": 1
  }
}