Pith Number

pith:LS4CD7I5

pith:2014:LS4CD7I5FORIK5P6YHA3K3MIWO

not attested not anchored not stored refs pending

Stable radial distortion calibration by polynomial matrix inequalities programming

Didier Henrion (CTU/FEE, Jan Heller (CTU/FEE), LAAS), Tomas Pajdla (CTU/FEE)

arxiv:1409.5753 v1 · 2014-09-19 · math.OC · 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{LS4CD7I5FORIK5P6YHA3K3MIWO}

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	2026-05-18T02:42:26.385572Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5cb821fd1d2ba28575fec1c1b56d88b3b8dcc000af4fcf91be39fbf54b2fd937

Aliases

arxiv: 1409.5753 · arxiv_version: 1409.5753v1 · doi: 10.48550/arxiv.1409.5753 · pith_short_12: LS4CD7I5FORI · pith_short_16: LS4CD7I5FORIK5P6 · pith_short_8: LS4CD7I5

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/LS4CD7I5FORIK5P6YHA3K3MIWO \
  | 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: 5cb821fd1d2ba28575fec1c1b56d88b3b8dcc000af4fcf91be39fbf54b2fd937

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a6a014cdc2e32d0e2054861f19eb5bdc2244bccccfb553f5df99780b8fefa4e5",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2014-09-19T18:42:43Z",
    "title_canon_sha256": "53d8f2a525963aefb9b349acd82c50c474a56745350a1104bee09f6fc350b6ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.5753",
    "kind": "arxiv",
    "version": 1
  }
}