Pith Number

pith:GRILGVKZ

pith:2007:GRILGVKZ22XMHHNREYCHH2VBKT

not attested not anchored not stored refs pending

Fast OPED algorithm for reconstruction of images from Radon data

Oleg Tischenko, Yuan Xu

arxiv:math/0703617 v1 · 2007-03-21 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GRILGVKZ22XMHHNREYCHH2VBKT}

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	2026-06-03T22:06:22.304789Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3450b35559d6aec39db1260473eaa154c5a5a4c0dc4015c765874f1b5f3b9c3b

Aliases

arxiv: math/0703617 · arxiv_version: math/0703617v1 · doi: 10.48550/arxiv.math/0703617 · pith_short_12: GRILGVKZ22XM · pith_short_16: GRILGVKZ22XMHHNR · pith_short_8: GRILGVKZ

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/GRILGVKZ22XMHHNREYCHH2VBKT \
  | 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: 3450b35559d6aec39db1260473eaa154c5a5a4c0dc4015c765874f1b5f3b9c3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89a61ae9c5024d9a8e41e62e50a1a6a4dd366feff63b67fb40357dc79176fe4e",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "",
    "primary_cat": "math.NA",
    "submitted_at": "2007-03-21T02:43:45Z",
    "title_canon_sha256": "63129bbeb20bb4b9e801a415e71b2ba5ce30f765ec5924d84eca2846c3a0fa7b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0703617",
    "kind": "arxiv",
    "version": 1
  }
}