Pith Number

pith:MGV7OCGR

pith:2019:MGV7OCGROGE6DRVCGRAYEV7YQ6

not attested not anchored not stored refs pending

Free motion around black holes with discs or rings: between integrability and chaos -- VI. The Melnikov method

L. Polcar, O. Semer\'ak

arxiv:1911.09790 v1 · 2019-11-22 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MGV7OCGROGE6DRVCGRAYEV7YQ6}

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	2026-07-05T00:21:17.675817Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

61abf708d17189e1c6a234418257f887bdc5428e56afe1c0664175b3cee33931

Aliases

arxiv: 1911.09790 · arxiv_version: 1911.09790v1 · doi: 10.48550/arxiv.1911.09790 · pith_short_12: MGV7OCGROGE6 · pith_short_16: MGV7OCGROGE6DRVC · pith_short_8: MGV7OCGR

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/MGV7OCGROGE6DRVCGRAYEV7YQ6 \
  | 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: 61abf708d17189e1c6a234418257f887bdc5428e56afe1c0664175b3cee33931

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8876d3e4e43b37021e929990d5e4016da6fb01c2b61fb2367c13305e9cac604c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-11-22T00:09:44Z",
    "title_canon_sha256": "e994008d0f2cfa97f4d79d648092d38e8ffba3d4a5696180e710221fb5602fe5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.09790",
    "kind": "arxiv",
    "version": 1
  }
}