Pith Number

pith:JWD2SPUS

pith:2013:JWD2SPUSQVVARXBHKZZL75I43F

not attested not anchored not stored refs pending

Sparsest Cut on Bounded Treewidth Graphs: Algorithms and Hardness Results

Anupam Gupta, David Witmer, Kunal Talwar

arxiv:1305.1347 v1 · 2013-05-06 · 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{JWD2SPUSQVVARXBHKZZL75I43F}

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	2026-05-18T03:26:21.995543Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4d87a93e92856a08dc275672bff51cd94abc9e1d5864759e47a870de3b6a3c75

Aliases

arxiv: 1305.1347 · arxiv_version: 1305.1347v1 · doi: 10.48550/arxiv.1305.1347 · pith_short_12: JWD2SPUSQVVA · pith_short_16: JWD2SPUSQVVARXBH · pith_short_8: JWD2SPUS

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/JWD2SPUSQVVARXBHKZZL75I43F \
  | 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: 4d87a93e92856a08dc275672bff51cd94abc9e1d5864759e47a870de3b6a3c75

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "56e7b172d261e6c2027f0ce721c0d7916725731ed28c53dd5c106016b893e11a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-05-06T22:39:09Z",
    "title_canon_sha256": "d40b5aac9f5f2e261202e9d4b168f6ac55a64544a4d62537db61f29d8cfecbf6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.1347",
    "kind": "arxiv",
    "version": 1
  }
}