Pith Number

pith:QNFIXI5K

pith:2019:QNFIXI5K3GNP55THGNQU6QARDV

not attested not anchored not stored refs pending

Improved (In-)Approximability Bounds for d-Scattered Set

Ioannis Katsikarelis, Michael Lampis, Vangelis Th. Paschos

arxiv:1910.05589 v1 · 2019-10-12 · cs.CC · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QNFIXI5K3GNP55THGNQU6QARDV}

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	2026-07-05T00:11:40.067036Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

834a8ba3aad99afef66733614f40111d6185e0a5c905530b0fa1e7576f3ef7b8

Aliases

arxiv: 1910.05589 · arxiv_version: 1910.05589v1 · doi: 10.48550/arxiv.1910.05589 · pith_short_12: QNFIXI5K3GNP · pith_short_16: QNFIXI5K3GNP55TH · pith_short_8: QNFIXI5K

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/QNFIXI5K3GNP55THGNQU6QARDV \
  | 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: 834a8ba3aad99afef66733614f40111d6185e0a5c905530b0fa1e7576f3ef7b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e4a2dd73ee72f76eb82b6cd810ade9517b42e9bbd644304cdd787873e8ab965b",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2019-10-12T16:13:59Z",
    "title_canon_sha256": "82886d4e75827a32917b30ac6f9916f3fe3a31614497a79929fab90524211822"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1910.05589",
    "kind": "arxiv",
    "version": 1
  }
}