Pith Number

pith:QDQT6Q45

pith:2019:QDQT6Q45ZPHEY4UP5CXMYDHSEW

not attested not anchored not stored refs pending

2D moment invariants from the point of view of the classical invariant theory

Leonid Bedratyuk

arxiv:1908.08927 v2 · 2019-08-20 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QDQT6Q45ZPHEY4UP5CXMYDHSEW}

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	2026-07-05T00:01:03.760656Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80e13f439dcbce4c728fe8aecc0cf225a008e49419f1a23f2ecd4f362e8dcc45

Aliases

arxiv: 1908.08927 · arxiv_version: 1908.08927v2 · doi: 10.48550/arxiv.1908.08927 · pith_short_12: QDQT6Q45ZPHE · pith_short_16: QDQT6Q45ZPHEY4UP · pith_short_8: QDQT6Q45

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/QDQT6Q45ZPHEY4UP5CXMYDHSEW \
  | 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: 80e13f439dcbce4c728fe8aecc0cf225a008e49419f1a23f2ecd4f362e8dcc45

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ec5fcce407c385f8d1ee90ebbf49305d6ed9bc544ea473af0b6039ae4f95b06",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-08-20T20:55:00Z",
    "title_canon_sha256": "bfabc1f5538eed1b18b594bf411a96b532a7f6fe74e7e8e25b3d97b6b1d3b4df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.08927",
    "kind": "arxiv",
    "version": 2
  }
}