Pith Number

pith:OQL3EUD2

pith:2013:OQL3EUD2I54POVD4O2BIL3DZP2

not attested not anchored not stored refs pending

Information, Estimation, and Lookahead in the Gaussian channel

Kartik Venkat, Shlomo Shamai, Tsachy Weissman, Yair Carmon

arxiv:1302.2167 v1 · 2013-02-08 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OQL3EUD2I54POVD4O2BIL3DZP2}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:57:56.602370Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7417b2507a4778f7547c768285ec797e8a5aaf0678bb1286c9da51434048b244

Aliases

arxiv: 1302.2167 · arxiv_version: 1302.2167v1 · doi: 10.48550/arxiv.1302.2167 · pith_short_12: OQL3EUD2I54P · pith_short_16: OQL3EUD2I54POVD4 · pith_short_8: OQL3EUD2

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/OQL3EUD2I54POVD4O2BIL3DZP2 \
  | 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: 7417b2507a4778f7547c768285ec797e8a5aaf0678bb1286c9da51434048b244

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e779b40e65c11028280e0f3d489deb428278521d12d9e470b9f7b13edb9f95c",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-02-08T22:33:26Z",
    "title_canon_sha256": "6dc80fcd1df05b9c1b937511e924bb36e52dbfad067e89cb70a2c299fc6ce4ca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.2167",
    "kind": "arxiv",
    "version": 1
  }
}