Pith Number

pith:HC66WXYZ

pith:2015:HC66WXYZMOBVW7BTCPUVNRSK7R

not attested not anchored not stored refs pending

Obstructions to finite dimensional cohomology of abstract Cauchy-Riemann complexes

C. Denson Hill, Judith Brinkschulte

arxiv:1501.00842 v1 · 2015-01-05 · math.CV · math.AP · 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{HC66WXYZMOBVW7BTCPUVNRSK7R}

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	2026-05-18T00:10:04.609492Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

38bdeb5f1963835b7c3313e956c64afc59f22bf09b845bd49b048eef10136cd6

Aliases

arxiv: 1501.00842 · arxiv_version: 1501.00842v1 · doi: 10.48550/arxiv.1501.00842 · pith_short_12: HC66WXYZMOBV · pith_short_16: HC66WXYZMOBVW7BT · pith_short_8: HC66WXYZ

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/HC66WXYZMOBVW7BTCPUVNRSK7R \
  | 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: 38bdeb5f1963835b7c3313e956c64afc59f22bf09b845bd49b048eef10136cd6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b2cbf40db6c621d75d124cdb48c9657ceaa199b464efe3580594102fb9638d9c",
    "cross_cats_sorted": [
      "math.AP",
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2015-01-05T12:57:12Z",
    "title_canon_sha256": "64980fd510b405c7fbac595083cab206b933fc9c9274bb80824232042bca2928"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.00842",
    "kind": "arxiv",
    "version": 1
  }
}