Pith Number

pith:D6DNQXAP

pith:2016:D6DNQXAP2XUOGVI5BFRD4DNXV5

not attested not anchored not stored refs pending

Small feedback vertex sets in planar digraphs

Fr\'ed\'eric Maffray, Laetitia Lemoine, Louis Esperet

arxiv:1606.04419 v3 · 2016-06-14 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D6DNQXAP2XUOGVI5BFRD4DNXV5}

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	2026-05-18T00:46:20.971467Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f86d85c0fd5e8e3551d09623e0db7af77f7feb055afa2e6a5c147613910bc68

Aliases

arxiv: 1606.04419 · arxiv_version: 1606.04419v3 · doi: 10.48550/arxiv.1606.04419 · pith_short_12: D6DNQXAP2XUO · pith_short_16: D6DNQXAP2XUOGVI5 · pith_short_8: D6DNQXAP

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/D6DNQXAP2XUOGVI5BFRD4DNXV5 \
  | 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: 1f86d85c0fd5e8e3551d09623e0db7af77f7feb055afa2e6a5c147613910bc68

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "443bf1e3be5a46fd9884c09ff02d32dac3ea3256d1bd437d1a65c48cc01e1a7e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2016-06-14T15:21:57Z",
    "title_canon_sha256": "ae82638be034e27da0b9879571146bf3b1be237df37bf5dbdbf78a19e46151c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.04419",
    "kind": "arxiv",
    "version": 3
  }
}