Pith Number

pith:6U3Q6EVF

pith:2017:6U3Q6EVFF7DIFA6QG4UJPMQHIB

not attested not anchored not stored refs pending

Constant angle surfaces in Lorentzian Berger spheres

Apoena Passos Passamani, Irene I. Onnis, Paola Piu

arxiv:1705.10090 v1 · 2017-05-29 · 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{6U3Q6EVFF7DIFA6QG4UJPMQHIB}

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	2026-05-18T00:43:31.984229Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f5370f12a52fc68283d0372897b2074041bea04aeb92a32b9e768f4f013ba890

Aliases

arxiv: 1705.10090 · arxiv_version: 1705.10090v1 · doi: 10.48550/arxiv.1705.10090 · pith_short_12: 6U3Q6EVFF7DI · pith_short_16: 6U3Q6EVFF7DIFA6Q · pith_short_8: 6U3Q6EVF

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/6U3Q6EVFF7DIFA6QG4UJPMQHIB \
  | 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: f5370f12a52fc68283d0372897b2074041bea04aeb92a32b9e768f4f013ba890

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "10de198be4305e425508359d1c3ae955c62abf8e9219623d58794eb715a94be2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2017-05-29T09:38:03Z",
    "title_canon_sha256": "1befb3073e6512b956234e5879348fae1829ec41e1a799c8329ec605204f2922"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.10090",
    "kind": "arxiv",
    "version": 1
  }
}