Pith Number

pith:4YDW76CL

pith:2009:4YDW76CL3KV4JIMYLZLXLH6CJA

not attested not anchored not stored refs pending

Analyzing Least Squares and Kalman Filtered Compressed Sensing

Namrata Vaswani

arxiv:0903.5074 v1 · 2009-03-29 · 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{4YDW76CL3KV4JIMYLZLXLH6CJA}

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	2026-05-18T00:58:48.169210Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e6076ff84bdaabc4a1985e57759fc24802b5c318dbd3aa8da0f46178c3651e79

Aliases

arxiv: 0903.5074 · arxiv_version: 0903.5074v1 · doi: 10.48550/arxiv.0903.5074 · pith_short_12: 4YDW76CL3KV4 · pith_short_16: 4YDW76CL3KV4JIMY · pith_short_8: 4YDW76CL

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/4YDW76CL3KV4JIMYLZLXLH6CJA \
  | 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: e6076ff84bdaabc4a1985e57759fc24802b5c318dbd3aa8da0f46178c3651e79

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9112aa634be52a125c4b6d52720cd397479bf38970a38d74ed8c030a759510e4",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2009-03-29T17:24:45Z",
    "title_canon_sha256": "1043f4c684d8fa2b5be44c26318e5b5b3fe7d8a1446e5cfb7c906912b89f11c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.5074",
    "kind": "arxiv",
    "version": 1
  }
}