Pith Number

pith:L63KY2KY

pith:2011:L63KY2KYYIH3NPJX2TSJCSXOHR

not attested not anchored not stored refs pending

Fast Balanced Partitioning is Hard, Even on Grids and Trees

Andreas Emil Feldmann

arxiv:1111.6745 v6 · 2011-11-29 · cs.CC · 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{L63KY2KYYIH3NPJX2TSJCSXOHR}

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	2026-05-17T23:47:44.698788Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5fb6ac6958c20fb6bd37d4e4914aee3c74afa47bfc5f85bf65427f4746362f6e

Aliases

arxiv: 1111.6745 · arxiv_version: 1111.6745v6 · doi: 10.48550/arxiv.1111.6745 · pith_short_12: L63KY2KYYIH3 · pith_short_16: L63KY2KYYIH3NPJX · pith_short_8: L63KY2KY

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/L63KY2KYYIH3NPJX2TSJCSXOHR \
  | 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: 5fb6ac6958c20fb6bd37d4e4914aee3c74afa47bfc5f85bf65427f4746362f6e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7cf3844da9e302e63f5854791397bcdfb36b81c15b657a0d4c8762f3bacd9dc4",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2011-11-29T10:07:18Z",
    "title_canon_sha256": "7f1437a6304d247e8c77afde37836117e870e92bb92a9b4cd05ed7c272a7c163"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.6745",
    "kind": "arxiv",
    "version": 6
  }
}