Pith Number

pith:YB7AFE5P

pith:2009:YB7AFE5PKEOZBPNBOKDQ76TTR3

not attested not anchored not stored refs pending

Semiclassical instability of dynamical warp drives

Carlos Barcel\'o, Stefano Finazzi, Stefano Liberati

arxiv:0904.0141 v2 · 2009-04-01 · 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{YB7AFE5PKEOZBPNBOKDQ76TTR3}

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	2026-05-18T02:35:00.010753Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c07e0293af511d90bda172870ffa738edd28141e1b6536d3907727ee4b4a2054

Aliases

arxiv: 0904.0141 · arxiv_version: 0904.0141v2 · doi: 10.48550/arxiv.0904.0141 · pith_short_12: YB7AFE5PKEOZ · pith_short_16: YB7AFE5PKEOZBPNB · pith_short_8: YB7AFE5P

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/YB7AFE5PKEOZBPNBOKDQ76TTR3 \
  | 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: c07e0293af511d90bda172870ffa738edd28141e1b6536d3907727ee4b4a2054

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59a33225b10412dc2162d94091dbc56a9d95682e6dac73cf732d2ec4cce044d8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-04-01T13:06:12Z",
    "title_canon_sha256": "7a36cd87fc4bde7e188e5c5e0499b80b4f693a0110f2a4170126e222c8c54e09"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.0141",
    "kind": "arxiv",
    "version": 2
  }
}