Pith Number

pith:MX2MANQK

pith:2013:MX2MANQKSQCQ6QKKFX6R3EIZFF

not attested not anchored not stored refs pending

The Optimal Hard Threshold for Singular Values is 4/sqrt(3)

David L. Donoho, Matan Gavish

arxiv:1305.5870 v3 · 2013-05-24 · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MX2MANQKSQCQ6QKKFX6R3EIZFF}

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

2 papers in Pith

Spectral Unforgetting: Post-Hoc Recovery of Damaged Capabilities Without Retraining

eOptShrinkQ: Near-Lossless KV Cache Compression Through Optimal Spectral Denoising and Quantization

Receipt and verification

First computed	2026-05-18T02:50:32.492711Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

65f4c0360a94050f414a2dfd1d91192971f5334e8a2be3d7cc5e15a0d5bde44f

Aliases

arxiv: 1305.5870 · arxiv_version: 1305.5870v3 · doi: 10.48550/arxiv.1305.5870 · pith_short_12: MX2MANQKSQCQ · pith_short_16: MX2MANQKSQCQ6QKK · pith_short_8: MX2MANQK

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/MX2MANQKSQCQ6QKKFX6R3EIZFF \
  | 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: 65f4c0360a94050f414a2dfd1d91192971f5334e8a2be3d7cc5e15a0d5bde44f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4243519c3f95b9f02ee9e255eceb85fa7ed1adaadcc3704643e2dc9a5628c6d3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2013-05-24T23:54:18Z",
    "title_canon_sha256": "33f7a4e3be212ff7956665e1ae6511a56c094b2dc20bba4d3a1b28d3df785bf2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.5870",
    "kind": "arxiv",
    "version": 3
  }
}