Pith Number

pith:EDU7MGLS

pith:2009:EDU7MGLSYUWVM537QNQCH6PD2F

not attested not anchored not stored refs pending

Non-negative Legendrian isotopy in $ST^*M$

Stefan Nemirovski, Vladimir Chernov

arxiv:0905.0983 v1 · 2009-05-07 · math.SG · gr-qc · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EDU7MGLSYUWVM537QNQCH6PD2F}

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	2026-05-18T02:34:59.306546Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20e9f61972c52d56777f836023f9e3d17c79559e9e849b03d59e1c1ebdcb25a8

Aliases

arxiv: 0905.0983 · arxiv_version: 0905.0983v1 · doi: 10.48550/arxiv.0905.0983 · pith_short_12: EDU7MGLSYUWV · pith_short_16: EDU7MGLSYUWVM537 · pith_short_8: EDU7MGLS

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/EDU7MGLSYUWVM537QNQCH6PD2F \
  | 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: 20e9f61972c52d56777f836023f9e3d17c79559e9e849b03d59e1c1ebdcb25a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "688230da9a7d30ddcda50fe99aa76ecb50a902f0b9220ecf5001d2a681b7cce4",
    "cross_cats_sorted": [
      "gr-qc",
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2009-05-07T13:23:06Z",
    "title_canon_sha256": "822a2d09d7d9737dea10ff7e39ddfa255b49da4d3c39d381c953001a1cc086b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.0983",
    "kind": "arxiv",
    "version": 1
  }
}