Pith Number

pith:ARUHAS5P

pith:2008:ARUHAS5PXFQYEPSK2YBOHHW7HA

not attested not anchored not stored refs pending

Normal forms for almost non-integrable CR structures

Dmitri Zaitsev

arxiv:0812.1104 v2 · 2008-12-05 · math.CV · 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{ARUHAS5PXFQYEPSK2YBOHHW7HA}

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	2026-05-18T00:33:00.454450Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0468704bafb961823e4ad602e39edf3837e2275b1ad034371551b33f3dbd715b

Aliases

arxiv: 0812.1104 · arxiv_version: 0812.1104v2 · doi: 10.48550/arxiv.0812.1104 · pith_short_12: ARUHAS5PXFQY · pith_short_16: ARUHAS5PXFQYEPSK · pith_short_8: ARUHAS5P

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/ARUHAS5PXFQYEPSK2YBOHHW7HA \
  | 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: 0468704bafb961823e4ad602e39edf3837e2275b1ad034371551b33f3dbd715b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25ecb01230f906f0188391196776587e4f4df20f3eb85d32d011e1d59b8afb2e",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2008-12-05T10:24:38Z",
    "title_canon_sha256": "c665f327dffeb205419d7a45e2fa543864b3771a225b8a6f27b69076de935170"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.1104",
    "kind": "arxiv",
    "version": 2
  }
}