Pith Number

pith:DLKPWH2L

pith:2013:DLKPWH2L2GMBK6MRRVF56T4CNQ

not attested not anchored not stored refs pending

Entanglement Structure in Expanding Universes

Yasusada Nambu

arxiv:1305.4193 v1 · 2013-05-17 · gr-qc · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DLKPWH2L2GMBK6MRRVF56T4CNQ}

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.

Cited by

1 paper in Pith

Delay-Independent Stability of Nonlinear Delay Differential Equations via Isospectral Reduction

Receipt and verification

First computed	2026-05-18T01:49:49.131422Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ad4fb1f4bd1981579918d4bdf4f826c1672d388332d36cb93cb4db689284ee1

Aliases

arxiv: 1305.4193 · arxiv_version: 1305.4193v1 · doi: 10.48550/arxiv.1305.4193 · pith_short_12: DLKPWH2L2GMB · pith_short_16: DLKPWH2L2GMBK6MR · pith_short_8: DLKPWH2L

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/DLKPWH2L2GMBK6MRRVF56T4CNQ \
  | 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: 1ad4fb1f4bd1981579918d4bdf4f826c1672d388332d36cb93cb4db689284ee1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b48b025e7659534ce3bd53a797baaacee46c20817d70f7e5a41590985e7e2c15",
    "cross_cats_sorted": [
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-05-17T21:15:02Z",
    "title_canon_sha256": "abcad409c8f4b2eeb3f7ff4a528936934884c26dd4915809f9ec31fe3b586880"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.4193",
    "kind": "arxiv",
    "version": 1
  }
}