Pith Number

pith:PORU5DF6

pith:2009:PORU5DF6IN66RT3MO33SNV6ADZ

not attested not anchored not stored refs pending

On iterative reconstruction in the nonlinearized polarization tomography

Roman Novikov (CMAP)

arxiv:0904.2469 v1 · 2009-04-16 · math-ph · math.AP · math.FA · math.MP · 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{PORU5DF6IN66RT3MO33SNV6ADZ}

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	2026-05-18T02:13:59.893732Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ba34e8cbe437de8cf6c76f726d7c01e7db0ab9455e548e8d01b0989cf60c707

Aliases

arxiv: 0904.2469 · arxiv_version: 0904.2469v1 · doi: 10.48550/arxiv.0904.2469 · pith_short_12: PORU5DF6IN66 · pith_short_16: PORU5DF6IN66RT3M · pith_short_8: PORU5DF6

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/PORU5DF6IN66RT3MO33SNV6ADZ \
  | 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: 7ba34e8cbe437de8cf6c76f726d7c01e7db0ab9455e548e8d01b0989cf60c707

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7148ef14011918ab65fd880b16242121362a8c68e2adce9b164829751a31b18d",
    "cross_cats_sorted": [
      "math.AP",
      "math.FA",
      "math.MP",
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2009-04-16T11:56:46Z",
    "title_canon_sha256": "b63cf95c65683dac2d87b0ad68c4923e124d092b40c90c9a83f8563fdda13f4f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.2469",
    "kind": "arxiv",
    "version": 1
  }
}