Pith Number

pith:TVTJXWT2

pith:2012:TVTJXWT2DBOAWQP7B44LSUOMMR

not attested not anchored not stored refs pending

Understanding Set Cover: Sub-exponential Time Approximations and Lift-and-Project Methods

Eden Chlamtac, Konstantinos Georgiou, Zac Friggstad

arxiv:1204.5489 v2 · 2012-04-24 · math.CO · 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{TVTJXWT2DBOAWQP7B44LSUOMMR}

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	2026-05-18T03:42:23.821124Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d669bda7a185c0b41ff0f38b951cc646ea753ba2d5a656b4b875e4cf91a1c08

Aliases

arxiv: 1204.5489 · arxiv_version: 1204.5489v2 · doi: 10.48550/arxiv.1204.5489 · pith_short_12: TVTJXWT2DBOA · pith_short_16: TVTJXWT2DBOAWQP7 · pith_short_8: TVTJXWT2

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/TVTJXWT2DBOAWQP7B44LSUOMMR \
  | 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: 9d669bda7a185c0b41ff0f38b951cc646ea753ba2d5a656b4b875e4cf91a1c08

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eba3338e642d5d86a31b1fc14cc6b08fe83c79b8a7d09ad2c7d7cd0b3431d14a",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-04-24T20:12:25Z",
    "title_canon_sha256": "bb34533a70548c72258e93f743a993fb800006d92817dbfd2a0bf97575e03be1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.5489",
    "kind": "arxiv",
    "version": 2
  }
}