Pith Number

pith:6JDHUDTL

pith:2009:6JDHUDTLW4NIOUNFE3UDQYKR3C

not attested not anchored not stored refs pending

Focusing: coming to the point in metamaterials

Andre Diatta, Ross McPhedran, Sebastien Guenneau

arxiv:0912.0271 v2 · 2009-12-01 · physics.optics · math-ph · math.DG · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6JDHUDTLW4NIOUNFE3UDQYKR3C}

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	2026-05-18T04:41:34.969297Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f2467a0e6bb71a8751a526e8386151d8919a2a4a5615a039dd30b7761112951f

Aliases

arxiv: 0912.0271 · arxiv_version: 0912.0271v2 · doi: 10.48550/arxiv.0912.0271 · pith_short_12: 6JDHUDTLW4NI · pith_short_16: 6JDHUDTLW4NIOUNF · pith_short_8: 6JDHUDTL

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/6JDHUDTLW4NIOUNFE3UDQYKR3C \
  | 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: f2467a0e6bb71a8751a526e8386151d8919a2a4a5615a039dd30b7761112951f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "572dd505a5dfdd61a96f56585eee68e2bd0a61b6be1f8213cde5e3a9549f4679",
    "cross_cats_sorted": [
      "math-ph",
      "math.DG",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2009-12-01T21:17:13Z",
    "title_canon_sha256": "248d9689e541dbd15c32c21dfbd6822e19434dcc5c0d414b80ed97d6948bd33f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.0271",
    "kind": "arxiv",
    "version": 2
  }
}