Pith Number

pith:3C7GURDD

pith:2017:3C7GURDDVNHZPICRU4WNZHXZWP

not attested not anchored not stored refs pending

Prescribing Gaussian curvature on closed Riemann surface with conical singularity in the negative case

Xiaobao Zhu, Yunyan Yang

arxiv:1706.02059 v1 · 2017-06-07 · math.AP · 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{3C7GURDDVNHZPICRU4WNZHXZWP}

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	2026-05-18T00:42:50.255042Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d8be6a4463ab4f97a051a72cdc9ef9b3e7ae93d2388f4c131f9ad8b4346e8f75

Aliases

arxiv: 1706.02059 · arxiv_version: 1706.02059v1 · doi: 10.48550/arxiv.1706.02059 · pith_short_12: 3C7GURDDVNHZ · pith_short_16: 3C7GURDDVNHZPICR · pith_short_8: 3C7GURDD

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/3C7GURDDVNHZPICRU4WNZHXZWP \
  | 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: d8be6a4463ab4f97a051a72cdc9ef9b3e7ae93d2388f4c131f9ad8b4346e8f75

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c7d71265527b25ffe9dc34a87fdd4d05e809e531578eef91cb32d39f833ebfc",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2017-06-07T06:50:23Z",
    "title_canon_sha256": "61248b13c6d21e0119df452ad7ae64937e0e26eff3ec833acd97512832c11f5c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.02059",
    "kind": "arxiv",
    "version": 1
  }
}