Pith Number

pith:J43K72CJ

pith:2014:J43K72CJAWKWXOXF22F3C7W2JD

not attested not anchored not stored refs pending

Spectral tensor-train decomposition

Allan P. Engsig-Karup, Daniele Bigoni, Youssef M. Marzouk

arxiv:1405.5713 v4 · 2014-05-22 · 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{J43K72CJAWKWXOXF22F3C7W2JD}

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	2026-05-18T01:04:30.478765Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4f36afe84905956bbae5d68bb17eda48f6fe00a210495af9d7c9593768a031d1

Aliases

arxiv: 1405.5713 · arxiv_version: 1405.5713v4 · doi: 10.48550/arxiv.1405.5713 · pith_short_12: J43K72CJAWKW · pith_short_16: J43K72CJAWKWXOXF · pith_short_8: J43K72CJ

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/J43K72CJAWKWXOXF22F3C7W2JD \
  | 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: 4f36afe84905956bbae5d68bb17eda48f6fe00a210495af9d7c9593768a031d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2ce319f3e6e018c39c0a6a2ce910cd218a22a374034046e153b2d0582b3cf28",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-05-22T11:22:24Z",
    "title_canon_sha256": "54bd5c8e2f55e686998eb8a6ed5fe6b00dcbb6d0162bc914f597b28334d9efc3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.5713",
    "kind": "arxiv",
    "version": 4
  }
}