Pith Number

pith:KEQEU3WW

pith:2013:KEQEU3WWC6Z2A6YVQ3Z6G7RFMZ

not attested not anchored not stored refs pending

Nonnegatively Curved Alexandrov Spaces with Souls of Codimension Two

Xueping Li

arxiv:1301.1238 v1 · 2013-01-07 · math.DG · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KEQEU3WWC6Z2A6YVQ3Z6G7RFMZ}

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	2026-05-18T03:37:06.439249Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

51204a6ed617b3a07b1586f3e37e25665b7bc1f5b023a7539d133362787f8463

Aliases

arxiv: 1301.1238 · arxiv_version: 1301.1238v1 · doi: 10.48550/arxiv.1301.1238 · pith_short_12: KEQEU3WWC6Z2 · pith_short_16: KEQEU3WWC6Z2A6YV · pith_short_8: KEQEU3WW

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/KEQEU3WWC6Z2A6YVQ3Z6G7RFMZ \
  | 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: 51204a6ed617b3a07b1586f3e37e25665b7bc1f5b023a7539d133362787f8463

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7cd101b285ecac6363c7fb3c3ecc41635e9e0acbf3ef9843cc56baf01a76dd7",
    "cross_cats_sorted": [
      "math.MG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2013-01-07T15:57:30Z",
    "title_canon_sha256": "194b040571d699c1f69f6aefacd281354de881e9a8978c1a660cb23670e88f93"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.1238",
    "kind": "arxiv",
    "version": 1
  }
}