Pith Number

pith:JR2CECUC

pith:2001:JR2CECUCRJCGTTL5FDMNZYGIAB

not attested not anchored not stored refs pending

Faster-than-light effects and negative group delays in optics and electronics, and their applications

Daniel Solli, Jandir M. Hickmann, Raymond Y. Chiao

arxiv:cs/0103014 v1 · 2001-03-12 · cs.PF

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JR2CECUCRJCGTTL5FDMNZYGIAB}

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	2026-05-18T01:39:25.203225Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4c74220a828a4469cd7d28d8dce0c8007a0e37e1060a68793a4400018b438a74

Aliases

arxiv: cs/0103014 · arxiv_version: cs/0103014v1 · doi: 10.48550/arxiv.cs/0103014 · pith_short_12: JR2CECUCRJCG · pith_short_16: JR2CECUCRJCGTTL5 · pith_short_8: JR2CECUC

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/JR2CECUCRJCGTTL5FDMNZYGIAB \
  | 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: 4c74220a828a4469cd7d28d8dce0c8007a0e37e1060a68793a4400018b438a74

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a9be91e32fc313d82afd626b2df86f4b22c505ef303403b7febe9d8fad62e23",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cs.PF",
    "submitted_at": "2001-03-12T18:23:57Z",
    "title_canon_sha256": "8e0bb6af4dff61d066a3283dadad87fb92b9b1099c7d1dddbad4727fa6d984bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0103014",
    "kind": "arxiv",
    "version": 1
  }
}