Pith Number

pith:IUGLSCK3

pith:2007:IUGLSCK3F4G4ISHV4NSHUX7RHT

not attested not anchored not stored refs pending

Orthogonal complex structures on domains in R^4

Jeff Viaclovsky, Simon Salamon

arxiv:0704.3422 v2 · 2007-04-25 · math.DG · math.AG · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IUGLSCK3F4G4ISHV4NSHUX7RHT}

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	2026-07-04T15:48:26.187303Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

450cb9095b2f0dc448f5e3647a5ff13cf8443de14e2d4ad2fd8d2a6bf2f773b0

Aliases

arxiv: 0704.3422 · arxiv_version: 0704.3422v2 · doi: 10.48550/arxiv.0704.3422 · pith_short_12: IUGLSCK3F4G4 · pith_short_16: IUGLSCK3F4G4ISHV · pith_short_8: IUGLSCK3

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/IUGLSCK3F4G4ISHV4NSHUX7RHT \
  | 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: 450cb9095b2f0dc448f5e3647a5ff13cf8443de14e2d4ad2fd8d2a6bf2f773b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b8fddd09cc3328451ebff0fe0601aa27f5140292b7e4ff14ac986c92abbcfd7",
    "cross_cats_sorted": [
      "math.AG",
      "math.AP"
    ],
    "license": "",
    "primary_cat": "math.DG",
    "submitted_at": "2007-04-25T18:44:41Z",
    "title_canon_sha256": "5bc3ed98df9452310a7a55a3ecb1b21954ca282fc4dc662580abc250640c0132"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0704.3422",
    "kind": "arxiv",
    "version": 2
  }
}