Pith Number

pith:55ZGAOKX

pith:2018:55ZGAOKX4XZDPJQUKTEHRKCLGD

not attested not anchored not stored refs pending

Characterization of manifolds of constant curvature by spherical curves

Jos\'e D. da Silva, Luiz C. B. da Silva

arxiv:1809.05943 v4 · 2018-09-16 · 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{55ZGAOKX4XZDPJQUKTEHRKCLGD}

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	2026-05-17T23:42:43.017057Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef72603957e5f237a61454c878a84b30d320004b0ac7dcc3f5fb262a70875842

Aliases

arxiv: 1809.05943 · arxiv_version: 1809.05943v4 · doi: 10.48550/arxiv.1809.05943 · pith_short_12: 55ZGAOKX4XZD · pith_short_16: 55ZGAOKX4XZDPJQU · pith_short_8: 55ZGAOKX

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/55ZGAOKX4XZDPJQUKTEHRKCLGD \
  | 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: ef72603957e5f237a61454c878a84b30d320004b0ac7dcc3f5fb262a70875842

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "570ef0655de6f95e5046b631eeb85fd39f49e230873fcdfc2acdb710b90cf6e1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-09-16T19:57:49Z",
    "title_canon_sha256": "04a03a255fa38533cbcf9fa377f88ad070199a5ea0f0a4ef6daecf0c9aa84c17"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.05943",
    "kind": "arxiv",
    "version": 4
  }
}