Pith Number

pith:FQSR2S7T

pith:2012:FQSR2S7TXZ7NPOBM733MKG2IGL

not attested not anchored not stored refs pending

Linear Kernels on Graphs Excluding Topological Minors

Alexander Langer, Felix Reidl, Peter Rossmanith, Somnath Sikdar

arxiv:1201.2780 v4 · 2012-01-13 · cs.DS · cs.CC · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FQSR2S7TXZ7NPOBM733MKG2IGL}

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	2026-05-18T03:51:12.744101Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c251d4bf3be7ed7b82cfef6c51b4832eec6d49f583739d73480f5802eacfbd2

Aliases

arxiv: 1201.2780 · arxiv_version: 1201.2780v4 · doi: 10.48550/arxiv.1201.2780 · pith_short_12: FQSR2S7TXZ7N · pith_short_16: FQSR2S7TXZ7NPOBM · pith_short_8: FQSR2S7T

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/FQSR2S7TXZ7NPOBM733MKG2IGL \
  | 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: 2c251d4bf3be7ed7b82cfef6c51b4832eec6d49f583739d73480f5802eacfbd2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2dc7efea09f5bed0a9f03f20f3e90ac809ee125788fbdc9f2aaf0ed4ff0c7b10",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2012-01-13T09:42:53Z",
    "title_canon_sha256": "3a31e127c5822f31200c21325a4c9a76ee1aa63afd23ace6750aa3c8231e0719"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.2780",
    "kind": "arxiv",
    "version": 4
  }
}