Pith Number

pith:BB3ALPDN

pith:2008:BB3ALPDNOT7AVS3T6Q5DTXOHKM

not attested not anchored not stored refs pending

Approximating acyclicity parameters of sparse hypergraphs

Dimitrios M. Thilikos, Fedor V. Fomin, Petr A. Golovach

arxiv:0809.3646 v1 · 2008-09-22 · cs.DS · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BB3ALPDNOT7AVS3T6Q5DTXOHKM}

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	2026-07-04T15:14:30.682147Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

087605bc6d74fe0acb73f43a39ddc7530be0b7488620a6ad824cd415f9b3846c

Aliases

arxiv: 0809.3646 · arxiv_version: 0809.3646v1 · doi: 10.48550/arxiv.0809.3646 · pith_short_12: BB3ALPDNOT7A · pith_short_16: BB3ALPDNOT7AVS3T · pith_short_8: BB3ALPDN

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/BB3ALPDNOT7AVS3T6Q5DTXOHKM \
  | 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: 087605bc6d74fe0acb73f43a39ddc7530be0b7488620a6ad824cd415f9b3846c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "55a676872da3c194f5ab32cb675a5f2633fecba462221150c14d405ba6480859",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2008-09-22T08:17:22Z",
    "title_canon_sha256": "05afcc0a3e082878e7f406701680e7b3b6d4b733afb672f315926d4f1b082a65"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.3646",
    "kind": "arxiv",
    "version": 1
  }
}