Pith Number

pith:YPFJMQRC

pith:2017:YPFJMQRCDCXLBJ7XA2AWVRE57D

not attested not anchored not stored refs pending

A characterization of Zoll Riemannian metrics on the 2-sphere

Marco Mazzucchelli, Stefan Suhr

arxiv:1711.11285 v2 · 2017-11-30 · math.DG · math.AT · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YPFJMQRCDCXLBJ7XA2AWVRE57D}

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	2026-05-17T23:59:03.627493Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3ca96422218aeb0a7f706816ac49df8e3477dc35a564eb4c39b06ed119ad693

Aliases

arxiv: 1711.11285 · arxiv_version: 1711.11285v2 · doi: 10.48550/arxiv.1711.11285 · pith_short_12: YPFJMQRCDCXL · pith_short_16: YPFJMQRCDCXLBJ7X · pith_short_8: YPFJMQRC

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/YPFJMQRCDCXLBJ7XA2AWVRE57D \
  | 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: c3ca96422218aeb0a7f706816ac49df8e3477dc35a564eb4c39b06ed119ad693

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16a54108b5fc19f6192f99d2d23c05cbf7d4d753d2f5d5f7031257792188f13b",
    "cross_cats_sorted": [
      "math.AT",
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2017-11-30T09:44:05Z",
    "title_canon_sha256": "1d4529c62369d99931c74e79fa8f1763126be6fe0d2713a64ca2ace3285d2cad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.11285",
    "kind": "arxiv",
    "version": 2
  }
}