Pith Number

pith:M4WYFEU7

pith:2021:M4WYFEU7FOL365T2UPWN5CH2ME

not attested not anchored not stored refs pending

A block-sparse Tensor Train Format for sample-efficient high-dimensional Polynomial Regression

Michael G\"otte, Philipp Trunschke, Reinhold Schneider

arxiv:2104.14255 v1 · 2021-04-29 · math.NA · cs.LG · cs.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{M4WYFEU7FOL365T2UPWN5CH2ME}

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	2026-07-05T02:36:14.717186Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

672d82929f2b97bf767aa3ecde88fa6106d7a00e8c6b16dea9f95b277f58ffd0

Aliases

arxiv: 2104.14255 · arxiv_version: 2104.14255v1 · doi: 10.48550/arxiv.2104.14255 · pith_short_12: M4WYFEU7FOL3 · pith_short_16: M4WYFEU7FOL365T2 · pith_short_8: M4WYFEU7

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/M4WYFEU7FOL365T2UPWN5CH2ME \
  | 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: 672d82929f2b97bf767aa3ecde88fa6106d7a00e8c6b16dea9f95b277f58ffd0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad220dc5872acfbed7129e449dbb5dea83ae688aa343a54e42263aaffac75bdd",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2021-04-29T10:57:53Z",
    "title_canon_sha256": "a203b36d5ad1c9a437ac2933e048acba2ab10cfe584d6193950d41f7204319f5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.14255",
    "kind": "arxiv",
    "version": 1
  }
}