Pith Number

pith:3H5MDJKA

pith:2010:3H5MDJKAKXW5Z6UHVY4F3EOMET

not attested not anchored not stored refs pending

The non-birefringent limit of all linear, skewonless media and its unique light-cone structure

Alberto Favaro, Luzi Bergamin

arxiv:1008.2343 v4 · 2010-08-13 · 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{3H5MDJKAKXW5Z6UHVY4F3EOMET}

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	2026-05-18T04:29:44.495132Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d9fac1a54055eddcfa87ae385d91cc24cdf646ce0736b18083d7f42b643ebecc

Aliases

arxiv: 1008.2343 · arxiv_version: 1008.2343v4 · doi: 10.48550/arxiv.1008.2343 · pith_short_12: 3H5MDJKAKXW5 · pith_short_16: 3H5MDJKAKXW5Z6UH · pith_short_8: 3H5MDJKA

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/3H5MDJKAKXW5Z6UHVY4F3EOMET \
  | 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: d9fac1a54055eddcfa87ae385d91cc24cdf646ce0736b18083d7f42b643ebecc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c8d1a9a8c631cfbd76d3c01c1740b16d370c190181d57f26ceaea739340fbab",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2010-08-13T15:34:13Z",
    "title_canon_sha256": "a13d0586ec9b4828060cd0b1af0af3e77027d2c7d7521a182de571d6e9c6593d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1008.2343",
    "kind": "arxiv",
    "version": 4
  }
}