Pith Number

pith:KQQEPZBS

pith:2019:KQQEPZBSKATLW6BI7XNOXCUY5V

not attested not anchored not stored refs pending

Harmonic almost contact metric manifolds revisited

Francisco Mart\'in Cabrera

arxiv:1907.02325 v1 · 2019-07-04 · 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{KQQEPZBSKATLW6BI7XNOXCUY5V}

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	2026-05-17T23:41:28.968570Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

542047e4325026bb7828fddaeb8a98ed686f96bbb8e9ec22afb834c796a025b6

Aliases

arxiv: 1907.02325 · arxiv_version: 1907.02325v1 · doi: 10.48550/arxiv.1907.02325 · pith_short_12: KQQEPZBSKATL · pith_short_16: KQQEPZBSKATLW6BI · pith_short_8: KQQEPZBS

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/KQQEPZBSKATLW6BI7XNOXCUY5V \
  | 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: 542047e4325026bb7828fddaeb8a98ed686f96bbb8e9ec22afb834c796a025b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc5d596421c52240a6dcea0757774916a184af6e17c126866af24658462c8d1f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2019-07-04T10:53:24Z",
    "title_canon_sha256": "9494e10cc8d2fe5b8f24b282c565c12835f1d08daaa15f41c0a2ae8206320c33"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.02325",
    "kind": "arxiv",
    "version": 1
  }
}