Pith Number

pith:VK2AC5ZX

pith:2010:VK2AC5ZXJ3EYJWOH4DPIVZTTNQ

not attested not anchored not stored refs pending

Contact structures of arbitrary codimension and idempotents in the Heisenberg algebra

Erik van Erp

arxiv:1001.5426 v2 · 2010-01-29 · math.DG · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VK2AC5ZXJ3EYJWOH4DPIVZTTNQ}

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.

Cited by

1 paper in Pith

Sharp mapping properties of Poisson transforms and the Baum-Connes conjecture

Receipt and verification

First computed	2026-05-18T04:07:43.260263Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aab40177374ec984d9c7e0de8ae6736c1537b78e8143821ffc7b6ff55ee82a2d

Aliases

arxiv: 1001.5426 · arxiv_version: 1001.5426v2 · doi: 10.48550/arxiv.1001.5426 · pith_short_12: VK2AC5ZXJ3EY · pith_short_16: VK2AC5ZXJ3EYJWOH · pith_short_8: VK2AC5ZX

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/VK2AC5ZXJ3EYJWOH4DPIVZTTNQ \
  | 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: aab40177374ec984d9c7e0de8ae6736c1537b78e8143821ffc7b6ff55ee82a2d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90c10e498aef8eff9f55682e6ca175243c153ec521ab0929edc8a85c3b390b2b",
    "cross_cats_sorted": [
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2010-01-29T16:04:04Z",
    "title_canon_sha256": "0e0b18ff18a18712e2a77c88c6750db31eed619d764340333dd2147499f9deaa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.5426",
    "kind": "arxiv",
    "version": 2
  }
}