Pith Number

pith:NFDDB3ED

pith:2019:NFDDB3EDV4G7ADEZIZLLJE65GO

not attested not anchored not stored refs pending

Tight Lower Bound on the Tensor Rank based on the Maximally Square Unfolding

Bruno Scalzo Dees, Danilo P. Mandic, Giuseppe G. Calvi

arxiv:1909.05831 v2 · 2019-09-12 · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NFDDB3EDV4G7ADEZIZLLJE65GO}

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	2026-07-05T00:19:10.433254Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

694630ec83af0df00c994656b493dd33b7222ead3d4b841ddc1f6d7d58b86a5d

Aliases

arxiv: 1909.05831 · arxiv_version: 1909.05831v2 · doi: 10.48550/arxiv.1909.05831 · pith_short_12: NFDDB3EDV4G7 · pith_short_16: NFDDB3EDV4G7ADEZ · pith_short_8: NFDDB3ED

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/NFDDB3EDV4G7ADEZIZLLJE65GO \
  | 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: 694630ec83af0df00c994656b493dd33b7222ead3d4b841ddc1f6d7d58b86a5d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4a18dc6e88dba7c665ef3cec02e87b9c81d10b1f13493e5a14ce2a9fc66fa730",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2019-09-12T17:38:02Z",
    "title_canon_sha256": "050d9ec3b8865a6010e0887ba4ffaf931665e18aa611f310be69f8105c8fbb45"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.05831",
    "kind": "arxiv",
    "version": 2
  }
}