Pith Number

pith:7MFTEQ7Z

pith:2015:7MFTEQ7Z6IPHATNRHQXZTQ5MBO

not attested not anchored not stored refs pending

Spectral Smoothing via Random Matrix Perturbations

Ambuj Tewari, Chansoo Lee, Jacob Abernethy

arxiv:1507.03032 v2 · 2015-07-10 · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7MFTEQ7Z6IPHATNRHQXZTQ5MBO}

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	2026-05-18T01:24:24.661823Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb0b3243f9f21e704db13c2f99c3ac0b905ccb89f42eb654f9f3ea30ba7c84f1

Aliases

arxiv: 1507.03032 · arxiv_version: 1507.03032v2 · doi: 10.48550/arxiv.1507.03032 · pith_short_12: 7MFTEQ7Z6IPH · pith_short_16: 7MFTEQ7Z6IPHATNR · pith_short_8: 7MFTEQ7Z

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/7MFTEQ7Z6IPHATNRHQXZTQ5MBO \
  | 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: fb0b3243f9f21e704db13c2f99c3ac0b905ccb89f42eb654f9f3ea30ba7c84f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "df052af4139b30d3ad4992cf99b880fa140cc25284dbaa0fd1f090c8e78de6fd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2015-07-10T20:52:35Z",
    "title_canon_sha256": "367d64a9cb5c37bbdc600c05b3f3aa36cb8b0c93e9c876bb62181edf3135ea9c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.03032",
    "kind": "arxiv",
    "version": 2
  }
}