Pith Number

pith:AZYWMDPN

pith:2009:AZYWMDPN2USPKBCIMB4WV2M5KY

not attested not anchored not stored refs pending

The spectral curve of a quaternionic holomorphic line bundle over a 2-torus

Christoph Bohle, Franz Pedit, Ulrich Pinkall

arxiv:0904.2475 v1 · 2009-04-16 · 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{AZYWMDPN2USPKBCIMB4WV2M5KY}

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	2026-05-18T03:38:05.245840Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0671660dedd524f5044860796ae99d5608a41bec9b85e7c035d937646497059b

Aliases

arxiv: 0904.2475 · arxiv_version: 0904.2475v1 · doi: 10.48550/arxiv.0904.2475 · pith_short_12: AZYWMDPN2USP · pith_short_16: AZYWMDPN2USPKBCI · pith_short_8: AZYWMDPN

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/AZYWMDPN2USPKBCIMB4WV2M5KY \
  | 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: 0671660dedd524f5044860796ae99d5608a41bec9b85e7c035d937646497059b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2fb2d69df9dcd4b761343bb49616d52d25b8105c6730f91d7d29e91fad706ba3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2009-04-16T12:16:24Z",
    "title_canon_sha256": "56610c66712864867612bcd96c57f4eac0cb94e5e40af0c406c2649ff91ba56b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.2475",
    "kind": "arxiv",
    "version": 1
  }
}