Pith Number

pith:QRX3ZZLE

pith:2019:QRX3ZZLEYBUJVCCRSIIW5EDJWD

not attested not anchored not stored refs pending

An example for a nontrivial irreducible geodesic net in the plane

Fabian Parsch

arxiv:1902.07872 v1 · 2019-02-21 · math.MG · math.CO · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QRX3ZZLEYBUJVCCRSIIW5EDJWD}

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	2026-05-17T23:53:03.629217Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

846fbce564c0689a885192116e9069b0e0a0860bb0fe17a15c8979644003a7ec

Aliases

arxiv: 1902.07872 · arxiv_version: 1902.07872v1 · doi: 10.48550/arxiv.1902.07872 · pith_short_12: QRX3ZZLEYBUJ · pith_short_16: QRX3ZZLEYBUJVCCR · pith_short_8: QRX3ZZLE

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/QRX3ZZLEYBUJVCCRSIIW5EDJWD \
  | 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: 846fbce564c0689a885192116e9069b0e0a0860bb0fe17a15c8979644003a7ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d823ff37a2bf975c00fdf9ce274ae02b34ace713bf4e282c34d657b6cc429d2d",
    "cross_cats_sorted": [
      "math.CO",
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2019-02-21T05:35:41Z",
    "title_canon_sha256": "8a4cfd50a4838197b1d4eb9609e5a7cc7de15316ddb1eef4d10292046e65a0b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.07872",
    "kind": "arxiv",
    "version": 1
  }
}