Pith Number

pith:TDKJ2ROK

pith:2002:TDKJ2ROKT3BOO7FJ7J6OCHY7IG

not attested not anchored not stored refs pending

On mediums with negative phase velocity: a brief overview

Akhlesh Lakhtakia, Jaline Gerardin, Jianwei Wang, Martin W. McCall, Werner S. Weiglhofer

arxiv:physics/0205027 v1 · 2002-05-09 · physics.class-ph · cond-mat.other · physics.gen-ph · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TDKJ2ROKT3BOO7FJ7J6OCHY7IG}

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	2026-05-18T01:38:09.286191Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

98d49d45ca9ec2e77ca9fa7ce11f1f4199f7d066ea0ed4431bd28c93eaa630b0

Aliases

arxiv: physics/0205027 · arxiv_version: physics/0205027v1 · doi: 10.48550/arxiv.physics/0205027 · pith_short_12: TDKJ2ROKT3BO · pith_short_16: TDKJ2ROKT3BOO7FJ · pith_short_8: TDKJ2ROK

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/TDKJ2ROKT3BOO7FJ7J6OCHY7IG \
  | 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: 98d49d45ca9ec2e77ca9fa7ce11f1f4199f7d066ea0ed4431bd28c93eaa630b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "332d48c08207fe9008363b62541e8825b4a3ea6c3fea52cbbdcc3db54aeac73e",
    "cross_cats_sorted": [
      "cond-mat.other",
      "physics.gen-ph",
      "physics.optics"
    ],
    "license": "",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2002-05-09T15:25:38Z",
    "title_canon_sha256": "cb1c108d4966c01c37975125e7231f80f660a4e8f74c2cdd1bbe97d1f56fcdfd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0205027",
    "kind": "arxiv",
    "version": 1
  }
}