Pith Number

pith:DFNHGEOZ

pith:2012:DFNHGEOZCTRJGVOHGLHQEDPA3K

not attested not anchored not stored refs pending

On CR (Cauchy-Riemann) almost cosymplectic manifolds

Piotr Dacko

arxiv:1209.1848 v2 · 2012-09-09 · 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{DFNHGEOZCTRJGVOHGLHQEDPA3K}

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	2026-05-18T03:44:02.128556Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

195a7311d914e29355c732cf020de0da974cd0eff15f794ea6eb7afd4de365a9

Aliases

arxiv: 1209.1848 · arxiv_version: 1209.1848v2 · doi: 10.48550/arxiv.1209.1848 · pith_short_12: DFNHGEOZCTRJ · pith_short_16: DFNHGEOZCTRJGVOH · pith_short_8: DFNHGEOZ

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/DFNHGEOZCTRJGVOHGLHQEDPA3K \
  | 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: 195a7311d914e29355c732cf020de0da974cd0eff15f794ea6eb7afd4de365a9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c165dfee489844cb168f71396a6696992882c58eb00f3f328d509c922a59a9d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2012-09-09T22:35:58Z",
    "title_canon_sha256": "19331704852bd68a915318347f1deb601a3d8bcf5f1e4709461d7ecbe56f1091"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.1848",
    "kind": "arxiv",
    "version": 2
  }
}