Pith Number

pith:UYCJQLSK

pith:2012:UYCJQLSKMCW2DEV4ARU4R2MDLK

not attested not anchored not stored refs pending

Sparsity Lower Bounds for Dimensionality Reducing Maps

Huy L. Nguyen, Jelani Nelson

arxiv:1211.0995 v1 · 2012-11-05 · cs.DS · 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{UYCJQLSKMCW2DEV4ARU4R2MDLK}

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	2026-05-18T03:41:28.788342Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a604982e4a60ada192bc0469c8e9835a9bf2515fc947f0b08e6e9168e49aeb52

Aliases

arxiv: 1211.0995 · arxiv_version: 1211.0995v1 · doi: 10.48550/arxiv.1211.0995 · pith_short_12: UYCJQLSKMCW2 · pith_short_16: UYCJQLSKMCW2DEV4 · pith_short_8: UYCJQLSK

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/UYCJQLSKMCW2DEV4ARU4R2MDLK \
  | 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: a604982e4a60ada192bc0469c8e9835a9bf2515fc947f0b08e6e9168e49aeb52

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f453a59cf40c6c3760d70a9f54a5d4b20526fc854437b69bac01901a4493270",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2012-11-05T20:42:03Z",
    "title_canon_sha256": "a9785b84e540269105d42d860f9f954c9181bcccdfccd2f1c7c264eb1d1c8631"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.0995",
    "kind": "arxiv",
    "version": 1
  }
}