Pith Number

pith:TKGYICFF

pith:2007:TKGYICFFPHFTWJEEKMYMHZEL4S

not attested not anchored not stored refs pending

Hermitian and quaternionic Hermitian structures on tangent bundles

Rui Albuquerque

arxiv:math/0703450 v1 · 2007-03-15 · 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{TKGYICFFPHFTWJEEKMYMHZEL4S}

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	2026-05-18T04:06:19.390896Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a8d8408a579cb3b24845330c3e48be4b790162f202587406d9dc2d723010ac2

Aliases

arxiv: math/0703450 · arxiv_version: math/0703450v1 · doi: 10.48550/arxiv.math/0703450 · pith_short_12: TKGYICFFPHFT · pith_short_16: TKGYICFFPHFTWJEE · pith_short_8: TKGYICFF

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/TKGYICFFPHFTWJEEKMYMHZEL4S \
  | 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: 9a8d8408a579cb3b24845330c3e48be4b790162f202587406d9dc2d723010ac2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "09e8eb96c54d29c3ab1a57710e6a78cf8356e3e97db99820918dfb216fc4d28a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.DG",
    "submitted_at": "2007-03-15T12:32:00Z",
    "title_canon_sha256": "6248009cbbabecd53977d4cfea2fc0bb82750797e54b888d311a1b252f43f483"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0703450",
    "kind": "arxiv",
    "version": 1
  }
}