Pith Number

pith:I2QQFFRI

pith:2012:I2QQFFRIGK2M6TNUSBQHFV5FQC

not attested not anchored not stored refs pending

A Hierachical Evolutionary Algorithm for Multiobjective Optimization in IMRT

Clay Holdsworth, Jay Liao, Mark H Phillips, Minsun Kim

arxiv:1202.3821 v1 · 2012-02-17 · physics.med-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{I2QQFFRIGK2M6TNUSBQHFV5FQC}

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	2026-05-18T01:58:24.251791Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

46a102962832b4cf4db4906072d7a5808c0a3f26929b7f9784608a5f64a8dc01

Aliases

arxiv: 1202.3821 · arxiv_version: 1202.3821v1 · doi: 10.48550/arxiv.1202.3821 · pith_short_12: I2QQFFRIGK2M · pith_short_16: I2QQFFRIGK2M6TNU · pith_short_8: I2QQFFRI

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/I2QQFFRIGK2M6TNUSBQHFV5FQC \
  | 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: 46a102962832b4cf4db4906072d7a5808c0a3f26929b7f9784608a5f64a8dc01

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e4361c2884621b0bf440cc08a4ac2f77ad328dd43fdcaf09c2761b1c8a6ddea",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2012-02-17T00:21:39Z",
    "title_canon_sha256": "a893f9c2e871e8e3f9daff835d485682cb47b59dbe455dd086df5853dbc6a0df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.3821",
    "kind": "arxiv",
    "version": 1
  }
}