Pith Number

pith:KRWN2C5T

pith:2013:KRWN2C5TBJOEQPPO7OECBZWDOC

not attested not anchored not stored refs pending

On purely real surfaces in Kaehler surfaces and Lorentz surfaces in Lorentzian Kaehler surfaces

Bang-Yen Chen

arxiv:1307.1874 v1 · 2013-07-07 · 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{KRWN2C5TBJOEQPPO7OECBZWDOC}

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	2026-05-18T03:19:03.289935Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

546cdd0bb30a5c483deefb8820e6c37087dc6ddf4b77a799eb23e553d8845253

Aliases

arxiv: 1307.1874 · arxiv_version: 1307.1874v1 · doi: 10.48550/arxiv.1307.1874 · pith_short_12: KRWN2C5TBJOE · pith_short_16: KRWN2C5TBJOEQPPO · pith_short_8: KRWN2C5T

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/KRWN2C5TBJOEQPPO7OECBZWDOC \
  | 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: 546cdd0bb30a5c483deefb8820e6c37087dc6ddf4b77a799eb23e553d8845253

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f1be43c09a809ee1183336e3d74a631c56c94edc26dbde6ba0e7fe733cdc1f4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2013-07-07T15:16:43Z",
    "title_canon_sha256": "ba8fb3b86c9d336972b1a2128062f1380e1dbfe520b006dd4e2db449fe766a73"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.1874",
    "kind": "arxiv",
    "version": 1
  }
}