Pith Number

pith:OXSKOZOK

pith:2009:OXSKOZOKKRNDKMHLSHUX2GH6KV

not attested not anchored not stored refs pending

Improved Sparsity Thresholds Through Dictionary Splitting

Giuseppe Durisi, Helmut B\"olcskei, Patrick Kuppinger

arxiv:0908.1676 v1 · 2009-08-12 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OXSKOZOKKRNDKMHLSHUX2GH6KV}

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	2026-05-18T00:57:58.047002Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

75e4a765ca545a3530eb91e97d18fe556750fdbdfdccc973c5258a20d0f26da5

Aliases

arxiv: 0908.1676 · arxiv_version: 0908.1676v1 · doi: 10.48550/arxiv.0908.1676 · pith_short_12: OXSKOZOKKRND · pith_short_16: OXSKOZOKKRNDKMHL · pith_short_8: OXSKOZOK

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/OXSKOZOKKRNDKMHLSHUX2GH6KV \
  | 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: 75e4a765ca545a3530eb91e97d18fe556750fdbdfdccc973c5258a20d0f26da5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c2b23fc7630f3224a368d736037779ef86fd4c1037aa3185ce39b1a7ce0b972",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2009-08-12T10:48:51Z",
    "title_canon_sha256": "f2c1b680a57415dcad12e8c2e2aaca48b5007e6350b1a837412d9375bef8c18c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.1676",
    "kind": "arxiv",
    "version": 1
  }
}