Pith Number

pith:IWMSUBDP

pith:2019:IWMSUBDPJMQWBO5G5XCB2QNXBL

not attested not anchored not stored refs pending

A Fast Minimum Degree Algorithm and Matching Lower Bound

Animesh Fatehpuria, Matthew Fahrbach, Robert Cummings

arxiv:1907.12119 v2 · 2019-07-28 · cs.DS · cs.NA · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IWMSUBDPJMQWBO5G5XCB2QNXBL}

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	2026-07-05T05:59:00.930737Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45992a046f4b2160bba6edc41d41b70af5f62d1158c1c846f08181f63bd1ed6b

Aliases

arxiv: 1907.12119 · arxiv_version: 1907.12119v2 · doi: 10.48550/arxiv.1907.12119 · pith_short_12: IWMSUBDPJMQW · pith_short_16: IWMSUBDPJMQWBO5G · pith_short_8: IWMSUBDP

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/IWMSUBDPJMQWBO5G5XCB2QNXBL \
  | 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: 45992a046f4b2160bba6edc41d41b70af5f62d1158c1c846f08181f63bd1ed6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2b7fa16f2e478769455ee0506dab6b264106d3f05e3e65676cd465fbe262d68",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-07-28T17:57:21Z",
    "title_canon_sha256": "3380b22901818f12691ca68df45f9f8b22606947eaac4f9b86ae85a95b160550"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.12119",
    "kind": "arxiv",
    "version": 2
  }
}