Pith Number

pith:2PDFOAIP

pith:2017:2PDFOAIPMQDWXCI2IDOK4PX7VH

not attested not anchored not stored refs pending

A general theory of singular values with applications to signal denoising

Harm Derksen

arxiv:1705.10881 v1 · 2017-05-30 · math.NA · cs.IT · cs.NA · math.IT · math.OC · math.ST · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2PDFOAIPMQDWXCI2IDOK4PX7VH}

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	2026-05-18T00:43:19.997870Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3c657010f64076b891a40dcae3effa9f6ffcc03efe41e4568a9013df72e93f9

Aliases

arxiv: 1705.10881 · arxiv_version: 1705.10881v1 · doi: 10.48550/arxiv.1705.10881 · pith_short_12: 2PDFOAIPMQDW · pith_short_16: 2PDFOAIPMQDWXCI2 · pith_short_8: 2PDFOAIP

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/2PDFOAIPMQDWXCI2IDOK4PX7VH \
  | 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: d3c657010f64076b891a40dcae3effa9f6ffcc03efe41e4568a9013df72e93f9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4926a3834ac2bc5a8d80f33d811852570cd623426699ebcb86381dae65212778",
    "cross_cats_sorted": [
      "cs.IT",
      "cs.NA",
      "math.IT",
      "math.OC",
      "math.ST",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-05-30T22:25:03Z",
    "title_canon_sha256": "5f4115dfb22ab42c10682af076ec4445cfcd7d5039ba552672a245c916c20047"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.10881",
    "kind": "arxiv",
    "version": 1
  }
}