Pith Number

pith:WEAQCO57

pith:2015:WEAQCO57KUDP2TPQQSLRZRUSMD

not attested not anchored not stored refs pending

Infinigons of the hyperbolic plane and grossone

Maurice Margenstern

arxiv:1502.07990 v2 · 2015-02-27 · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WEAQCO57KUDP2TPQQSLRZRUSMD}

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	2026-05-18T02:23:25.980034Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b101013bbf5506fd4df084971cc69260cd26d7c84f8be4a35f1a1261592eacd4

Aliases

arxiv: 1502.07990 · arxiv_version: 1502.07990v2 · doi: 10.48550/arxiv.1502.07990 · pith_short_12: WEAQCO57KUDP · pith_short_16: WEAQCO57KUDP2TPQ · pith_short_8: WEAQCO57

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/WEAQCO57KUDP2TPQQSLRZRUSMD \
  | 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: b101013bbf5506fd4df084971cc69260cd26d7c84f8be4a35f1a1261592eacd4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "db9de25772dd220edfb00d7f29e3b929306fce398b6e82ed2c472c18c6bca20f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2015-02-27T18:00:22Z",
    "title_canon_sha256": "5fd01f559fc0fab7a5b5c73a4f23d72d45d70699b72a9ef8e5c8337e2796bf47"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.07990",
    "kind": "arxiv",
    "version": 2
  }
}