Pith Number

pith:EML22ZCX

pith:2014:EML22ZCX5LJ2RVG54QARR6LX4P

not attested not anchored not stored refs pending

On Klein's So-called Non-Euclidean geometry

Athanase Papadopoulos (ESI, GSU), IRMA, Norbert A'Campo (ESI)

arxiv:1406.7309 v1 · 2014-06-27 · math.MG · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EML22ZCX5LJ2RVG54QARR6LX4P}

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	2026-05-18T02:48:45.664548Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2317ad6457ead3a8d4dde40118f977e3ccc6ae67771aa5a9390dfb33844cf4c1

Aliases

arxiv: 1406.7309 · arxiv_version: 1406.7309v1 · doi: 10.48550/arxiv.1406.7309 · pith_short_12: EML22ZCX5LJ2 · pith_short_16: EML22ZCX5LJ2RVG5 · pith_short_8: EML22ZCX

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/EML22ZCX5LJ2RVG54QARR6LX4P \
  | 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: 2317ad6457ead3a8d4dde40118f977e3ccc6ae67771aa5a9390dfb33844cf4c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e4272e4e6f3854b961ffee281a383fa9aeb59d73cd837e5da1710e984852ab66",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2014-06-27T20:37:54Z",
    "title_canon_sha256": "952958ff7a38d825a82578ff4c1405b9e36abbd19e275f9d16243730ad0cf1a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.7309",
    "kind": "arxiv",
    "version": 1
  }
}