Pith Number

pith:2IJZTTNM

pith:2015:2IJZTTNMUVWKW6FOGZINCE7ZXH

not attested not anchored not stored refs pending

Fast and Simple PCA via Convex Optimization

Dan Garber, Elad Hazan

arxiv:1509.05647 v4 · 2015-09-18 · math.OC · cs.LG · cs.NA · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2IJZTTNMUVWKW6FOGZINCE7ZXH}

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.

Cited by

1 paper in Pith

Adaptive Federated Optimization

Receipt and verification

First computed	2026-05-18T01:26:02.521906Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d21399cdaca56cab78ae3650d113f9b9eb012edc6b857dc8fefbbc49e05b4a1c

Aliases

arxiv: 1509.05647 · arxiv_version: 1509.05647v4 · doi: 10.48550/arxiv.1509.05647 · pith_short_12: 2IJZTTNMUVWK · pith_short_16: 2IJZTTNMUVWKW6FO · pith_short_8: 2IJZTTNM

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/2IJZTTNMUVWKW6FOGZINCE7ZXH \
  | 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: d21399cdaca56cab78ae3650d113f9b9eb012edc6b857dc8fefbbc49e05b4a1c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "efb2c314b160fca71e2c5553b77f796da5dcebf81644f21baa640b29244ef21c",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2015-09-18T15:03:03Z",
    "title_canon_sha256": "d6f517eeca7477d5f3a0e963a14378968205be710ee11fe37a84c3698abcbd53"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.05647",
    "kind": "arxiv",
    "version": 4
  }
}