Pith Number

pith:VCO44OUX

pith:2009:VCO44OUXJSVCC7RPT7UJYGSZLP

not attested not anchored not stored refs pending

Complex submanifolds of almost complex Euclidean spaces

Antonio J. Di Scala, Luigi Vezzoni

arxiv:0905.4190 v1 · 2009-05-26 · math.DG · math.SG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VCO44OUXJSVCC7RPT7UJYGSZLP}

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	2026-05-18T04:31:52.509240Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a89dce3a974caa217e2f9fe89c1a595bc985ce1f1252e4287df3932dcce630fd

Aliases

arxiv: 0905.4190 · arxiv_version: 0905.4190v1 · doi: 10.48550/arxiv.0905.4190 · pith_short_12: VCO44OUXJSVC · pith_short_16: VCO44OUXJSVCC7RP · pith_short_8: VCO44OUX

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/VCO44OUXJSVCC7RPT7UJYGSZLP \
  | 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: a89dce3a974caa217e2f9fe89c1a595bc985ce1f1252e4287df3932dcce630fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d9950357c0c6222b2eb428a4c6514e79bab24b33a908fa3d79f3687c18648d8",
    "cross_cats_sorted": [
      "math.SG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2009-05-26T12:58:14Z",
    "title_canon_sha256": "a8e1fe4cbe58cd760a89450e183867a310f2605dbadddb269ad5336c39022252"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.4190",
    "kind": "arxiv",
    "version": 1
  }
}