Pith Number

pith:XFOAE7IP

pith:2017:XFOAE7IPNPJZCZUMIDQTPWIRBK

not attested not anchored not stored refs pending

Covering vectors by spaces: Regular matroids

Daniel Lokshtanov, Fedor V. Fomin, Petr A. Golovach, Saket Saurabh

arxiv:1710.02300 v1 · 2017-10-06 · cs.DS · 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{XFOAE7IPNPJZCZUMIDQTPWIRBK}

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	2026-05-18T00:33:33.862645Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b95c027d0f6bd391668c40e137d9110aa651fc2548fc0d7a0e7fceb1f3091c7b

Aliases

arxiv: 1710.02300 · arxiv_version: 1710.02300v1 · doi: 10.48550/arxiv.1710.02300 · pith_short_12: XFOAE7IPNPJZ · pith_short_16: XFOAE7IPNPJZCZUM · pith_short_8: XFOAE7IP

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/XFOAE7IPNPJZCZUMIDQTPWIRBK \
  | 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: b95c027d0f6bd391668c40e137d9110aa651fc2548fc0d7a0e7fceb1f3091c7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0018d995ad514f04cf027be1bb18fe87d86615254e6441da88d07af5472225f",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2017-10-06T08:02:35Z",
    "title_canon_sha256": "a717e70ff8bbaf5ebbdbecf0ab2842d0ec2a50d822cdc67b0ef729941096731f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.02300",
    "kind": "arxiv",
    "version": 1
  }
}