Pith Number

pith:HVVH774O

pith:2019:HVVH774OZ7CUD6VRNGU4ZR2KP2

not attested not anchored not stored refs pending

Which is the least complex explanation? Abduction and complexity

Fernando Soler-Toscano

arxiv:1902.05479 v1 · 2019-02-14 · math.LO · 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{HVVH774OZ7CUD6VRNGU4ZR2KP2}

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	2026-05-17T23:53:58.594608Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d6a7fff8ecfc541fab169a9ccc74a7e8512d3d759f52c259155f145c7a01200

Aliases

arxiv: 1902.05479 · arxiv_version: 1902.05479v1 · doi: 10.48550/arxiv.1902.05479 · pith_short_12: HVVH774OZ7CU · pith_short_16: HVVH774OZ7CUD6VR · pith_short_8: HVVH774O

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/HVVH774OZ7CUD6VRNGU4ZR2KP2 \
  | 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: 3d6a7fff8ecfc541fab169a9ccc74a7e8512d3d759f52c259155f145c7a01200

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "179138a3fc85cacd5e9966e678bfbac812dd84e7003d07e8d2aa03f9bcea6f92",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2019-02-14T16:22:16Z",
    "title_canon_sha256": "6f687fa7519e5e178b836f3c458d884a385b9a5a9bafd7b6c4f05b141d714b97"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.05479",
    "kind": "arxiv",
    "version": 1
  }
}