Pith Number

pith:LFW4Y6AU

pith:2018:LFW4Y6AUSBMAM2FLLZCKJS7WFU

not attested not anchored not stored refs pending

ETH-Hardness of Approximating 2-CSPs and Directed Steiner Network

Irit Dinur, Pasin Manurangsi

arxiv:1805.03867 v1 · 2018-05-10 · 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{LFW4Y6AUSBMAM2FLLZCKJS7WFU}

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	2026-05-18T00:16:16.529301Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

596dcc781490580668ab5e44a4cbf62d22040deb963d26c57eba90da938c33ca

Aliases

arxiv: 1805.03867 · arxiv_version: 1805.03867v1 · doi: 10.48550/arxiv.1805.03867 · pith_short_12: LFW4Y6AUSBMA · pith_short_16: LFW4Y6AUSBMAM2FL · pith_short_8: LFW4Y6AU

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/LFW4Y6AUSBMAM2FLLZCKJS7WFU \
  | 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: 596dcc781490580668ab5e44a4cbf62d22040deb963d26c57eba90da938c33ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dceefa9bb4813e9bb021c74a1954b02c0faa17067370eb089559cefadbb79c3d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2018-05-10T07:46:07Z",
    "title_canon_sha256": "83040f440e8d905e64c579c4616e75e7a51864fe7747092b523a258e7ba24e09"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.03867",
    "kind": "arxiv",
    "version": 1
  }
}