Pith Number

pith:IJOD46YA

pith:2009:IJOD46YATL4CTRHT3A4LWBDXHO

not attested not anchored not stored refs pending

Canonical connection on a class of Riemannian almost product manifolds

Dimitar Mekerov, Dobrinka Gribacheva

arxiv:0907.1501 v4 · 2009-07-09 · 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{IJOD46YATL4CTRHT3A4LWBDXHO}

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	2026-05-18T03:59:38.658374Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

425c3e7b009af829c4f3d838bb04773b908780ce024cc987433c90ce5341a63c

Aliases

arxiv: 0907.1501 · arxiv_version: 0907.1501v4 · doi: 10.48550/arxiv.0907.1501 · pith_short_12: IJOD46YATL4C · pith_short_16: IJOD46YATL4CTRHT · pith_short_8: IJOD46YA

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/IJOD46YATL4CTRHT3A4LWBDXHO \
  | 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: 425c3e7b009af829c4f3d838bb04773b908780ce024cc987433c90ce5341a63c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0cd9bf0e9c2af211bca1257ab046502535fde642085b91815715bbb0682f0c77",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2009-07-09T11:00:55Z",
    "title_canon_sha256": "93fe5ccfd6cd3260c3b2be5ff0adf6c828232c5e5d36e84904963af39c26ed07"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.1501",
    "kind": "arxiv",
    "version": 4
  }
}