Pith Number

pith:OSAXQ7PG

pith:2018:OSAXQ7PGKL33F4OAWS6T5TMKWC

not attested not anchored not stored refs pending

On the complexity of the outer-connected bondage and the outer-connected reinforcement problems

A. Shakiba, M. Hashemipour, M. R. Hooshmandasl

arxiv:1802.00649 v1 · 2018-02-02 · cs.DM · cs.CC · 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{OSAXQ7PGKL33F4OAWS6T5TMKWC}

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	2026-05-18T00:24:32.692742Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7481787de652f7b2f1c0b4bd3ecd8ab0a43867d5b22e05a5f09864d178118dc6

Aliases

arxiv: 1802.00649 · arxiv_version: 1802.00649v1 · doi: 10.48550/arxiv.1802.00649 · pith_short_12: OSAXQ7PGKL33 · pith_short_16: OSAXQ7PGKL33F4OA · pith_short_8: OSAXQ7PG

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/OSAXQ7PGKL33F4OAWS6T5TMKWC \
  | 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: 7481787de652f7b2f1c0b4bd3ecd8ab0a43867d5b22e05a5f09864d178118dc6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca1402cc91a1852e8f7c38b9ee6503b172ebfec6b3be23c6d947113ef6644a0e",
    "cross_cats_sorted": [
      "cs.CC",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2018-02-02T12:04:12Z",
    "title_canon_sha256": "2c4538b6342cb8442aa5e4f9879c3b1bdefea277b98f2ea6129ff8783d533894"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.00649",
    "kind": "arxiv",
    "version": 1
  }
}