Pith Number

pith:OYT2VNYR

pith:2003:OYT2VNYR33ICX2XB3MIKXWLA5V

not attested not anchored not stored refs pending

Negative Group Delay and Superluminal Propagation: An Electronic Circuit Approach

K. Sugiyama, M. Kitano, T. Nakanishi

arxiv:quant-ph/0302166 v1 · 2003-02-21 · 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{OYT2VNYR33ICX2XB3MIKXWLA5V}

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	2026-05-18T00:58:55.865919Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7627aab711ded02beae1db10abd960ed5f120bd68d79d1140521b68c0491438d

Aliases

arxiv: quant-ph/0302166 · arxiv_version: quant-ph/0302166v1 · doi: 10.48550/arxiv.quant-ph/0302166 · pith_short_12: OYT2VNYR33IC · pith_short_16: OYT2VNYR33ICX2XB · pith_short_8: OYT2VNYR

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/OYT2VNYR33ICX2XB3MIKXWLA5V \
  | 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: 7627aab711ded02beae1db10abd960ed5f120bd68d79d1140521b68c0491438d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7997241b3add3d5218f45e7f5e2fffec30bedd58cee3e61529fe53f8ae793a97",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2003-02-21T12:58:22Z",
    "title_canon_sha256": "d16cd0b4497b32b9827638445c61732448b79f2285bce5dc51078c86df1719c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0302166",
    "kind": "arxiv",
    "version": 1
  }
}