Pith Number

pith:65NFGHAA

pith:2009:65NFGHAAJZA4OLVRCB5PSBRVM3

not attested not anchored not stored refs pending

Model Selection: Two Fundamental Measures of Coherence and Their Algorithmic Significance

Robert Calderbank, Sina Jafarpour, Waheed U. Bajwa

arxiv:0911.2746 v3 · 2009-11-15 · cs.IT · math.IT · math.ST · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{65NFGHAAJZA4OLVRCB5PSBRVM3}

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	2026-05-18T00:22:07.276977Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f75a531c004e41c72eb1107af9063566fb0c384e486329cb0005405e0cb8a8ef

Aliases

arxiv: 0911.2746 · arxiv_version: 0911.2746v3 · doi: 10.48550/arxiv.0911.2746 · pith_short_12: 65NFGHAAJZA4 · pith_short_16: 65NFGHAAJZA4OLVR · pith_short_8: 65NFGHAA

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/65NFGHAAJZA4OLVRCB5PSBRVM3 \
  | 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: f75a531c004e41c72eb1107af9063566fb0c384e486329cb0005405e0cb8a8ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3766353d5a97c4cd6d1e2e65727b7aeb86f97c0f5187eba997ebc6e215d00a58",
    "cross_cats_sorted": [
      "math.IT",
      "math.ST",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2009-11-15T06:22:30Z",
    "title_canon_sha256": "40529eaab6799f5079b60287a1ee35b081c83c935e2f4a24b2354ff2ce7e7553"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.2746",
    "kind": "arxiv",
    "version": 3
  }
}