Pith Number

pith:QNOIJNXQ

pith:2009:QNOIJNXQ6AIJUFAHDFQXRQPXL6

not attested not anchored not stored refs pending

Self-consistent calculation of metamaterials with gain

A. Fang, C. M. Soukoulis, M. Wegener, Th. Koschny

arxiv:0907.0888 v1 · 2009-07-05 · 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{QNOIJNXQ6AIJUFAHDFQXRQPXL6}

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	2026-05-18T02:13:05.170795Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

835c84b6f0f0109a1407196178c1f75f940559fbafab9a939bda8c0804390fab

Aliases

arxiv: 0907.0888 · arxiv_version: 0907.0888v1 · doi: 10.48550/arxiv.0907.0888 · pith_short_12: QNOIJNXQ6AIJ · pith_short_16: QNOIJNXQ6AIJUFAH · pith_short_8: QNOIJNXQ

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/QNOIJNXQ6AIJUFAHDFQXRQPXL6 \
  | 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: 835c84b6f0f0109a1407196178c1f75f940559fbafab9a939bda8c0804390fab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b977149ffbcd48e8f75cf503c5e74e13d764da4eb0ec5d6156daedb387d020c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2009-07-05T20:38:38Z",
    "title_canon_sha256": "34e6fa5a9a247626d4aa2b0e8b41095357ef27dfaed93626f536987937234401"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.0888",
    "kind": "arxiv",
    "version": 1
  }
}