Pith Number

pith:LPYMIPWX

pith:2012:LPYMIPWX5CXARVC7NT7FLVDTNJ

not attested not anchored not stored refs pending

Empirical average-case relation between undersampling and sparsity in x-ray CT

Emil Y. Sidky, Jakob S. J{\o}rgensen, Per Christian Hansen, Xiaochuan Pan

arxiv:1211.5658 v2 · 2012-11-24 · math.NA · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LPYMIPWX5CXARVC7NT7FLVDTNJ}

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	2026-05-18T02:45:58.423782Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5bf0c43ed7e8ae08d45f6cfe55d4736a747cd4942fc39d3ade53a2cdfa59f57d

Aliases

arxiv: 1211.5658 · arxiv_version: 1211.5658v2 · doi: 10.48550/arxiv.1211.5658 · pith_short_12: LPYMIPWX5CXA · pith_short_16: LPYMIPWX5CXARVC7 · pith_short_8: LPYMIPWX

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/LPYMIPWX5CXARVC7NT7FLVDTNJ \
  | 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: 5bf0c43ed7e8ae08d45f6cfe55d4736a747cd4942fc39d3ade53a2cdfa59f57d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c48017266327ef08ab3d5e47c189a07468afa839513a1f189532b9deb2c04ac5",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2012-11-24T11:05:07Z",
    "title_canon_sha256": "1756e5b9b6a528d78c6bfea4f5a915c2d2a537eaf4779fbb60275e32495f90bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.5658",
    "kind": "arxiv",
    "version": 2
  }
}