Pith Number

pith:3H4SZ6W5

pith:2017:3H4SZ6W5XPUPQZMNF7VI2AZSN7

not attested not anchored not stored refs pending

Sparsity constrained split feasibility for dose-volume constraints in inverse planning of intensity-modulated photon or proton therapy

M. Brooke, M. Casiraghi, R. Schulte, R. Zalas, S. Penfold, Y. Censor

arxiv:1702.07925 v1 · 2017-02-25 · physics.med-ph · 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{3H4SZ6W5XPUPQZMNF7VI2AZSN7}

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	2026-05-18T00:45:41.867546Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d9f92cfaddbbe8f8658d2fea8d03326fcd314d25c4eff2f1c347553db011d0d6

Aliases

arxiv: 1702.07925 · arxiv_version: 1702.07925v1 · doi: 10.48550/arxiv.1702.07925 · pith_short_12: 3H4SZ6W5XPUP · pith_short_16: 3H4SZ6W5XPUPQZMN · pith_short_8: 3H4SZ6W5

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/3H4SZ6W5XPUPQZMNF7VI2AZSN7 \
  | 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: d9f92cfaddbbe8f8658d2fea8d03326fcd314d25c4eff2f1c347553db011d0d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d38e5fc23591c05b5b4148198d995a9f44365033b06f27a574075b5b68cd154c",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2017-02-25T17:25:38Z",
    "title_canon_sha256": "df5c88259763d73e6e6834b0b739ed4f6d4d9f8be3fec1a741ac81f3c22f9938"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.07925",
    "kind": "arxiv",
    "version": 1
  }
}