Pith Number

pith:HSY4GQV2

pith:2015:HSY4GQV22DHAKCUCSGPUKLMMVJ

not attested not anchored not stored refs pending

No Small Linear Program Approximates Vertex Cover within a Factor $2 - \epsilon$

Abbas Bazzi, Ola Svensson, Samuel Fiorini, Sebastian Pokutta

arxiv:1503.00753 v2 · 2015-03-02 · 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{HSY4GQV22DHAKCUCSGPUKLMMVJ}

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	2026-05-18T01:25:55.471624Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3cb1c342bad0ce050a82919f452d8caa604235f51e5d2bbee03de6fff345628b

Aliases

arxiv: 1503.00753 · arxiv_version: 1503.00753v2 · doi: 10.48550/arxiv.1503.00753 · pith_short_12: HSY4GQV22DHA · pith_short_16: HSY4GQV22DHAKCUC · pith_short_8: HSY4GQV2

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/HSY4GQV22DHAKCUCSGPUKLMMVJ \
  | 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: 3cb1c342bad0ce050a82919f452d8caa604235f51e5d2bbee03de6fff345628b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "031e8ca8de4c73779519d6943d93da96eff1d9d498e13d07dc42ec3bbc8db2a7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2015-03-02T21:26:23Z",
    "title_canon_sha256": "3014c2a1fae31af235f81ce2df0a4393c9c8eea3b1abba2972d0904be83a1921"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.00753",
    "kind": "arxiv",
    "version": 2
  }
}