Pith Number

pith:OCQZFDSW

pith:2011:OCQZFDSWKKCG2FUHAXHAE2OF33

not attested not anchored not stored refs pending

Instability conditions for circulatory and gyroscopic conservative systems

Dan Comanescu, Ioan Casu, Petre Birtea

arxiv:1112.1192 v2 · 2011-12-06 · math.DS · 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{OCQZFDSWKKCG2FUHAXHAE2OF33}

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	2026-05-18T03:50:48.593019Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

70a1928e5652846d168705ce0269c5dee195ad698832ecce788b997460685935

Aliases

arxiv: 1112.1192 · arxiv_version: 1112.1192v2 · doi: 10.48550/arxiv.1112.1192 · pith_short_12: OCQZFDSWKKCG · pith_short_16: OCQZFDSWKKCG2FUH · pith_short_8: OCQZFDSW

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/OCQZFDSWKKCG2FUHAXHAE2OF33 \
  | 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: 70a1928e5652846d168705ce0269c5dee195ad698832ecce788b997460685935

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b62dd8845765959842b9e2dc41bc0daa373b6f4e5e2d4f07661d2511dbff4ec3",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2011-12-06T08:39:21Z",
    "title_canon_sha256": "456c421432e66cdb205e6352002305f9bee9d93d42e56398e9d628b9cd62810c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.1192",
    "kind": "arxiv",
    "version": 2
  }
}