Pith Number

pith:ZRQ7GIFO

pith:2014:ZRQ7GIFOLPRHFHTCJGTELQKSJ7

not attested not anchored not stored refs pending

A classification theorem of nondegenerate equiaffine symmetric hypersurfaces

Xingxiao Li

arxiv:1408.5947 v1 · 2014-08-25 · 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{ZRQ7GIFOLPRHFHTCJGTELQKSJ7}

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	2026-05-18T02:44:15.797590Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cc61f320ae5be2729e6249a645c1524fcb4a58200321bc7f44684c998211080f

Aliases

arxiv: 1408.5947 · arxiv_version: 1408.5947v1 · doi: 10.48550/arxiv.1408.5947 · pith_short_12: ZRQ7GIFOLPRH · pith_short_16: ZRQ7GIFOLPRHFHTC · pith_short_8: ZRQ7GIFO

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/ZRQ7GIFOLPRHFHTCJGTELQKSJ7 \
  | 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: cc61f320ae5be2729e6249a645c1524fcb4a58200321bc7f44684c998211080f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe022b9ee39d07de53200126afc56d955415ebe8c75f43bf680e11a01337463b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2014-08-25T23:46:30Z",
    "title_canon_sha256": "9a44bc8b0a7b00ffc0068d9431ca3e49562b37dae213c83bfb364ef93a6b4a53"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.5947",
    "kind": "arxiv",
    "version": 1
  }
}