Pith Number

pith:FQBMJINX

pith:2009:FQBMJINXXJCVG4HUC3KATXJ7HY

not attested not anchored not stored refs pending

Construction of a Large Class of Deterministic Sensing Matrices that Satisfy a Statistical Isometry Property

Robert Calderbank, Sina Jafarpour, Stephen Howard

arxiv:0910.1943 v1 · 2009-10-10 · cs.IT · math.IT · math.PR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FQBMJINXXJCVG4HUC3KATXJ7HY}

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	2026-05-18T02:11:24.880775Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c02c4a1b7ba455370f416d409dd3f3e24536af0d362b9d94d16b5ba67160086

Aliases

arxiv: 0910.1943 · arxiv_version: 0910.1943v1 · doi: 10.48550/arxiv.0910.1943 · pith_short_12: FQBMJINXXJCV · pith_short_16: FQBMJINXXJCVG4HU · pith_short_8: FQBMJINX

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/FQBMJINXXJCVG4HUC3KATXJ7HY \
  | 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: 2c02c4a1b7ba455370f416d409dd3f3e24536af0d362b9d94d16b5ba67160086

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "607b3561326fdd1135c24d231eae4a7225fc314d7b26ed462e084b69eafb532a",
    "cross_cats_sorted": [
      "math.IT",
      "math.PR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2009-10-10T20:39:44Z",
    "title_canon_sha256": "0fcbdeff29bb5c7a3b7b9b7341f9bd884edd4525b8f9ba6c96196abb3321a288"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.1943",
    "kind": "arxiv",
    "version": 1
  }
}