Pith Number

pith:NM6HZJ7Z

pith:2011:NM6HZJ7Z25TYQREXG6AGZYSCCI

not attested not anchored not stored refs pending

Fundamental Group of Desargues Configuration Spaces

Barbu Berceanu, Saima Parveen

arxiv:1102.1790 v1 · 2011-02-09 · 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{NM6HZJ7Z25TYQREXG6AGZYSCCI}

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	2026-05-18T04:29:44.164618Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b3c7ca7f9d76788449737806ce242123f4b3908ccf0b9d32e0e00107a1d8391

Aliases

arxiv: 1102.1790 · arxiv_version: 1102.1790v1 · doi: 10.48550/arxiv.1102.1790 · pith_short_12: NM6HZJ7Z25TY · pith_short_16: NM6HZJ7Z25TYQREX · pith_short_8: NM6HZJ7Z

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/NM6HZJ7Z25TYQREXG6AGZYSCCI \
  | 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: 6b3c7ca7f9d76788449737806ce242123f4b3908ccf0b9d32e0e00107a1d8391

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2438f8bb7f8180e8a56fb50ead72280610e5eee375a074fbec5243bb3f6ef6be",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2011-02-09T06:35:48Z",
    "title_canon_sha256": "d181e5c2b0f4ca2c14b7e9f2b6eeb97cec8e4e24927beb3f9d7082a977090182"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.1790",
    "kind": "arxiv",
    "version": 1
  }
}