Pith Number

pith:3DEVJQQL

pith:2012:3DEVJQQL2A5HQYUVOLUY6TDOGV

not attested not anchored not stored refs pending

Modeling of causality with metamaterials

Igor I. Smolyaninov

arxiv:1210.5628 v2 · 2012-10-20 · physics.optics · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3DEVJQQL2A5HQYUVOLUY6TDOGV}

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	2026-05-18T01:53:45.436828Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d8c954c20bd03a78629572e98f4c6e35707be96e4183f3e6039f6beace800504

Aliases

arxiv: 1210.5628 · arxiv_version: 1210.5628v2 · doi: 10.48550/arxiv.1210.5628 · pith_short_12: 3DEVJQQL2A5H · pith_short_16: 3DEVJQQL2A5HQYUV · pith_short_8: 3DEVJQQL

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/3DEVJQQL2A5HQYUVOLUY6TDOGV \
  | 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: d8c954c20bd03a78629572e98f4c6e35707be96e4183f3e6039f6beace800504

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b50f2a64b1b9d02e3b6513311b8fb70e205c788b1fa4772185211d70959adbc",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2012-10-20T14:23:23Z",
    "title_canon_sha256": "f8af4ba602274935d32b97dfb83b14cbb1ecfcfc7a66b0bf54fa874b2a6372b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.5628",
    "kind": "arxiv",
    "version": 2
  }
}