Pith Number

pith:AGISIJ6U

pith:2019:AGISIJ6UHA3RZ5SQXSKD3ZIYH2

not attested not anchored not stored refs pending

Integrality Gap of the Vertex Cover Linear Programming Relaxation

Mohit Singh

arxiv:1907.11209 v1 · 2019-07-25 · cs.DS · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AGISIJ6UHA3RZ5SQXSKD3ZIYH2}

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	2026-05-17T23:39:32.933271Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

01912427d438371cf650bc943de5183e814a4fadff8367c1a7937d99d58159fd

Aliases

arxiv: 1907.11209 · arxiv_version: 1907.11209v1 · doi: 10.48550/arxiv.1907.11209 · pith_short_12: AGISIJ6UHA3R · pith_short_16: AGISIJ6UHA3RZ5SQ · pith_short_8: AGISIJ6U

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/AGISIJ6UHA3RZ5SQXSKD3ZIYH2 \
  | 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: 01912427d438371cf650bc943de5183e814a4fadff8367c1a7937d99d58159fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "66f864c202b9cb665a2fa61cd1c47971106a0eb31c4a34c19cd74f71d00797b8",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-07-25T17:19:43Z",
    "title_canon_sha256": "7d6a2f2d3f5d0612fa394eebd1cd11d9f036be1657c775a9f88b38966f9f12f5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.11209",
    "kind": "arxiv",
    "version": 1
  }
}