Pith Number

pith:QTTOWKVE

pith:2009:QTTOWKVERN3C5PIUPMN7OEKYJI

not attested not anchored not stored refs pending

Maslov index in semi-Riemannian submersions

Erasmo Caponio, Miguel Angel Javaloyes, Paolo Piccione

arxiv:0905.0345 v2 · 2009-05-04 · 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{QTTOWKVERN3C5PIUPMN7OEKYJI}

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	2026-05-18T04:31:51.243464Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84e6eb2aa48b762ebd147b1bf711584a28f1a15880f13e14345602329bcd7a8e

Aliases

arxiv: 0905.0345 · arxiv_version: 0905.0345v2 · doi: 10.48550/arxiv.0905.0345 · pith_short_12: QTTOWKVERN3C · pith_short_16: QTTOWKVERN3C5PIU · pith_short_8: QTTOWKVE

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/QTTOWKVERN3C5PIUPMN7OEKYJI \
  | 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: 84e6eb2aa48b762ebd147b1bf711584a28f1a15880f13e14345602329bcd7a8e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c1335746cb248bdc280bf76a183447c5f0ecf68bf6518cd60952f0b0026eeeef",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2009-05-04T10:27:37Z",
    "title_canon_sha256": "125f9b29b09ecc78cc8f71c36e595e6bfbe0f140ccb813b4c4cc83fd99204b43"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.0345",
    "kind": "arxiv",
    "version": 2
  }
}