Pith Number

pith:NWBHEM7U

pith:2019:NWBHEM7UDFVEE2C55QFRBRUBVU

not attested not anchored not stored refs pending

Isolated singularities of flat metrics on Riemann surfaces

Bin Xu, Jin Li

arxiv:1908.04989 v1 · 2019-08-14 · 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{NWBHEM7UDFVEE2C55QFRBRUBVU}

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	2026-07-04T23:55:58.899434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d827233f4196a42685dec0b10c681ad0ce174cec5cda98ae1393829ed6c0bd9

Aliases

arxiv: 1908.04989 · arxiv_version: 1908.04989v1 · doi: 10.48550/arxiv.1908.04989 · pith_short_12: NWBHEM7UDFVE · pith_short_16: NWBHEM7UDFVEE2C5 · pith_short_8: NWBHEM7U

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/NWBHEM7UDFVEE2C55QFRBRUBVU \
  | 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: 6d827233f4196a42685dec0b10c681ad0ce174cec5cda98ae1393829ed6c0bd9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6275c90cb04825d82ef5c7be3228cd6288aec9fb48a0f3b37d0ea64fcca2865",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2019-08-14T07:10:33Z",
    "title_canon_sha256": "03c6854739182adee99edd22c504629d2d6402f93dca1e59fa55db7420ccbbc2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04989",
    "kind": "arxiv",
    "version": 1
  }
}