Pith Number

pith:GTAWRY2I

pith:2018:GTAWRY2IETC6GJMO53PWGCGHM2

not attested not anchored not stored refs pending

A 2/3-Approximation Algorithm for Vertex-weighted Matching in Bipartite Graphs

Ahmed Al-Herz, Alex Pothen, Florin Dobrian, Mahantesh Halappanavar

arxiv:1804.08016 v2 · 2018-04-21 · 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{GTAWRY2IETC6GJMO53PWGCGHM2}

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	2026-05-18T00:03:36.954990Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

34c168e34824c5e3258eeedf6308c766bd0fd2240a1d15704626e62de25c78d4

Aliases

arxiv: 1804.08016 · arxiv_version: 1804.08016v2 · doi: 10.48550/arxiv.1804.08016 · pith_short_12: GTAWRY2IETC6 · pith_short_16: GTAWRY2IETC6GJMO · pith_short_8: GTAWRY2I

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/GTAWRY2IETC6GJMO53PWGCGHM2 \
  | 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: 34c168e34824c5e3258eeedf6308c766bd0fd2240a1d15704626e62de25c78d4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dbe23668c74d76554fb740fe4730e5b657aa1146a6b864724734f757649aa139",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-04-21T19:40:55Z",
    "title_canon_sha256": "cc592f2ec84a07c49e4bda2ae6039b42b84dbe93260637678da54126a2bd51c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.08016",
    "kind": "arxiv",
    "version": 2
  }
}