Pith Number

pith:GIDVOGN4

pith:2012:GIDVOGN4UJPJVTC3M3TWNQYBZS

not attested not anchored not stored refs pending

A Tight Combinatorial Algorithm for Submodular Maximization Subject to a Matroid Constraint

Justin Ward, Yuval Filmus

arxiv:1204.4526 v4 · 2012-04-20 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GIDVOGN4UJPJVTC3M3TWNQYBZS}

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	2026-05-18T03:06:51.999609Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

32075719bca25e9acc5b66e766c301cca92f1b5401a172e18fbb6afcd1714f96

Aliases

arxiv: 1204.4526 · arxiv_version: 1204.4526v4 · doi: 10.48550/arxiv.1204.4526 · pith_short_12: GIDVOGN4UJPJ · pith_short_16: GIDVOGN4UJPJVTC3 · pith_short_8: GIDVOGN4

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/GIDVOGN4UJPJVTC3M3TWNQYBZS \
  | 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: 32075719bca25e9acc5b66e766c301cca92f1b5401a172e18fbb6afcd1714f96

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "47f77e73758b6b430e8cc10e2ba15032ed26e602f440af09c5c549628d1238de",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2012-04-20T03:42:03Z",
    "title_canon_sha256": "54eb85abe4dbcd10e616ca4368b3ef4d3f876ebbdfd42ea4eaa9b7806e466d0f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.4526",
    "kind": "arxiv",
    "version": 4
  }
}