Pith Number

pith:CUYAYRBY

pith:2012:CUYAYRBY42NR2S5XOW6AOO2KF4

not attested not anchored not stored refs pending

Numerical methods with Sage

Lauri Ruotsalainen, Matti Vuorinen

arxiv:1208.3929 v1 · 2012-08-20 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CUYAYRBY42NR2S5XOW6AOO2KF4}

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	2026-05-18T03:48:25.758911Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

15300c4438e69b1d4bb775bc073b4a2f36f4ee1e682800ee5ebb03910a81aec6

Aliases

arxiv: 1208.3929 · arxiv_version: 1208.3929v1 · doi: 10.48550/arxiv.1208.3929 · pith_short_12: CUYAYRBY42NR · pith_short_16: CUYAYRBY42NR2S5X · pith_short_8: CUYAYRBY

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/CUYAYRBY42NR2S5XOW6AOO2KF4 \
  | 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: 15300c4438e69b1d4bb775bc073b4a2f36f4ee1e682800ee5ebb03910a81aec6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "346171892f9e07c6306f7db27d58a5b7c3be6a993a9266bdd329305b1faa64f2",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2012-08-20T07:35:38Z",
    "title_canon_sha256": "5dabb14f60aae968d8a2fc9d754894b7a52d38fa3a80dcb0bf831d0c117707b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.3929",
    "kind": "arxiv",
    "version": 1
  }
}