Pith Number

pith:FTY3WBBV

pith:2015:FTY3WBBVTZQA6SHHI45PXQ34ZO

not attested not anchored not stored refs pending

Recovering PCA from Hybrid-$(\ell_1,\ell_2)$ Sparse Sampling of Data Elements

Abhisek Kundu, Malik Magdon-Ismail, Petros Drineas

arxiv:1503.00547 v1 · 2015-03-02 · cs.IT · cs.LG · math.IT · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FTY3WBBVTZQA6SHHI45PXQ34ZO}

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	2026-05-18T02:25:54.251055Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2cf1bb04359e600f48e7473afbc37ccbbe35cd6de90336c5e86da559c5d6152c

Aliases

arxiv: 1503.00547 · arxiv_version: 1503.00547v1 · doi: 10.48550/arxiv.1503.00547 · pith_short_12: FTY3WBBVTZQA · pith_short_16: FTY3WBBVTZQA6SHH · pith_short_8: FTY3WBBV

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/FTY3WBBVTZQA6SHHI45PXQ34ZO \
  | 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: 2cf1bb04359e600f48e7473afbc37ccbbe35cd6de90336c5e86da559c5d6152c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "771d565d7ddab413c7811f9dcba44b88823f86f7895e84a8b6a45a492b2ec136",
    "cross_cats_sorted": [
      "cs.LG",
      "math.IT",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-03-02T14:34:48Z",
    "title_canon_sha256": "a6e4e233469aab53f132068d4436bc8369adad100c7c0eecad07ee9d92b4098a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.00547",
    "kind": "arxiv",
    "version": 1
  }
}