Pith Number

pith:HSKPHXUD

pith:2018:HSKPHXUDTVMNVVEBOMD5SWRZIE

not attested not anchored not stored refs pending

Parameterized Algorithms for the Matrix Completion Problem

Iyad Kanj, Robert Ganian, Sebastian Ordyniak, Stefan Szeider

arxiv:1804.03423 v2 · 2018-04-10 · cs.DS · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HSKPHXUDTVMNVVEBOMD5SWRZIE}

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	2026-05-18T00:05:50.839444Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c94f3de839d58dad4817307d95a394109b489de89fa0287769e4306155292d0

Aliases

arxiv: 1804.03423 · arxiv_version: 1804.03423v2 · doi: 10.48550/arxiv.1804.03423 · pith_short_12: HSKPHXUDTVMN · pith_short_16: HSKPHXUDTVMNVVEB · pith_short_8: HSKPHXUD

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/HSKPHXUDTVMNVVEBOMD5SWRZIE \
  | 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: 3c94f3de839d58dad4817307d95a394109b489de89fa0287769e4306155292d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98018e2d77b878ce16273946e16a713922f33e96465a51fbe0b361701045d3f8",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-04-10T09:52:54Z",
    "title_canon_sha256": "2acc8466f4486b48c626dbc90b389b0a0e9d780e2b71abfaf3be5234e4981579"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.03423",
    "kind": "arxiv",
    "version": 2
  }
}