Pith Number

pith:TIISFW66

pith:2018:TIISFW66WOENDWYEX5B57XGCES

not attested not anchored not stored refs pending

Topological rigidity for closed hypersurfaces of elliptic space forms

Eduardo Longa, Jaime Ripoll

arxiv:1801.07996 v2 · 2018-01-24 · 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{TIISFW66WOENDWYEX5B57XGCES}

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	2026-05-18T00:04:39.657157Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a1122dbdeb388d1db04bf43dfdcc2249d72d9f62aa68a82c97a4478c1f5f8dd

Aliases

arxiv: 1801.07996 · arxiv_version: 1801.07996v2 · doi: 10.48550/arxiv.1801.07996 · pith_short_12: TIISFW66WOEN · pith_short_16: TIISFW66WOENDWYE · pith_short_8: TIISFW66

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/TIISFW66WOENDWYEX5B57XGCES \
  | 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: 9a1122dbdeb388d1db04bf43dfdcc2249d72d9f62aa68a82c97a4478c1f5f8dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06004f1ba584e24896042216e940d445b8942178e44163cfbd477dbb0d13f14b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-01-24T14:28:32Z",
    "title_canon_sha256": "502e206c1b1cccb7412526c1ff7ba7794291d166f43233f08a32bf7ca4a02244"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.07996",
    "kind": "arxiv",
    "version": 2
  }
}