Pith Number

pith:JGIECVU4

pith:2017:JGIECVU4CNOM2VCI4Q4NRCZWC3

not attested not anchored not stored refs pending

Epicycles in hyperbolic sky

Olga Romaskevich

arxiv:1704.01339 v2 · 2017-04-05 · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JGIECVU4CNOM2VCI4Q4NRCZWC3}

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	2026-05-17T23:57:59.890130Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

499041569c135ccd5448e438d88b3616f5171b83a24d8c5adae99f31e326f48d

Aliases

arxiv: 1704.01339 · arxiv_version: 1704.01339v2 · doi: 10.48550/arxiv.1704.01339 · pith_short_12: JGIECVU4CNOM · pith_short_16: JGIECVU4CNOM2VCI · pith_short_8: JGIECVU4

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/JGIECVU4CNOM2VCI4Q4NRCZWC3 \
  | 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: 499041569c135ccd5448e438d88b3616f5171b83a24d8c5adae99f31e326f48d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8439640ed14712a642c21386aca73ed37763b29005c1e1e3131f19355c2dafa0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2017-04-05T09:49:53Z",
    "title_canon_sha256": "7bbcb24eed34dbea00a1cf925cc7b96376a02a932f81df3c23128c7572b94f9a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.01339",
    "kind": "arxiv",
    "version": 2
  }
}