Pith Number

pith:E2FN3D3T

pith:2016:E2FN3D3TISLKLJZC2PE63UJ7UZ

not attested not anchored not stored refs pending

Deterministic Fully Dynamic Approximate Vertex Cover and Fractional Matching in $O(1)$ Amortized Update Time

Deeparnab Chakrabarty, Monika Henzinger, Sayan Bhattacharya

arxiv:1611.00198 v2 · 2016-11-01 · 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{E2FN3D3TISLKLJZC2PE63UJ7UZ}

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	2026-05-18T00:57:43.659052Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

268add8f734496a5a722d3c9edd13fa6526a26883116a514e0e4cdad46cab2ed

Aliases

arxiv: 1611.00198 · arxiv_version: 1611.00198v2 · doi: 10.48550/arxiv.1611.00198 · pith_short_12: E2FN3D3TISLK · pith_short_16: E2FN3D3TISLKLJZC · pith_short_8: E2FN3D3T

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/E2FN3D3TISLKLJZC2PE63UJ7UZ \
  | 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: 268add8f734496a5a722d3c9edd13fa6526a26883116a514e0e4cdad46cab2ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7196ad928d4c992f5dc47073175cc3b25c515646ec535f57d1ede2cc63f00e0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2016-11-01T12:18:55Z",
    "title_canon_sha256": "028f096c101d052cf8a81ced005508196e7b49df515cd1e35bc571cbacc6bc2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.00198",
    "kind": "arxiv",
    "version": 2
  }
}