Pith Number

pith:AXUOATJ3

pith:2019:AXUOATJ3HQOZ4WHCHBL6ODECCQ

not attested not anchored not stored refs pending

Counting Induced Subgraphs: An Algebraic Approach to #W[1]-hardness

Johannes Schmitt, Julian D\"orfler, Marc Roth, Philip Wellnitz

arxiv:1904.10479 v1 · 2019-04-23 · cs.CC · cs.DM · 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{AXUOATJ3HQOZ4WHCHBL6ODECCQ}

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	2026-05-17T23:47:53.590204Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

05e8e04d3b3c1d9e58e23857e70c8214386d86c4bcfd4662c62f002181d9adf2

Aliases

arxiv: 1904.10479 · arxiv_version: 1904.10479v1 · doi: 10.48550/arxiv.1904.10479 · pith_short_12: AXUOATJ3HQOZ · pith_short_16: AXUOATJ3HQOZ4WHC · pith_short_8: AXUOATJ3

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/AXUOATJ3HQOZ4WHCHBL6ODECCQ \
  | 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: 05e8e04d3b3c1d9e58e23857e70c8214386d86c4bcfd4662c62f002181d9adf2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51166793f2bf4b4121096628874998723eb9fbb48e61d2c0338457f4c4b4eb58",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2019-04-23T18:16:07Z",
    "title_canon_sha256": "a518beac3d9b0bc0437a97ef43bb6c6502235e04f9e26d5a9fc0f1d21be44ac6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.10479",
    "kind": "arxiv",
    "version": 1
  }
}