Pith Number

pith:XJQVYPJS

pith:2003:XJQVYPJSQLEXHRVQNXXNPLD2ED

not attested not anchored not stored refs pending

A spherical perfect lens

J.B. Pendry (Imperial College London), Kanpur), S. Anantha Ramakrishna (IIT

arxiv:cond-mat/0311203 v1 · 2003-11-10 · cond-mat.dis-nn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XJQVYPJSQLEXHRVQNXXNPLD2ED}

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	2026-05-18T03:24:32.426801Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba615c3d3282c973c6b06deed7ac7a20e3ce6e79cbafbfb8d3f655afc8835d67

Aliases

arxiv: cond-mat/0311203 · arxiv_version: cond-mat/0311203v1 · doi: 10.48550/arxiv.cond-mat/0311203 · pith_short_12: XJQVYPJSQLEX · pith_short_16: XJQVYPJSQLEXHRVQ · pith_short_8: XJQVYPJS

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/XJQVYPJSQLEXHRVQNXXNPLD2ED \
  | 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: ba615c3d3282c973c6b06deed7ac7a20e3ce6e79cbafbfb8d3f655afc8835d67

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2620994e74323f2367c4d1560e6539b56812194cf2fd37fe447573f8b4ea110c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cond-mat.dis-nn",
    "submitted_at": "2003-11-10T08:30:11Z",
    "title_canon_sha256": "772a49338122ac70361f7078f40714158768aa2590d81828ef4d20534d75a35a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cond-mat/0311203",
    "kind": "arxiv",
    "version": 1
  }
}