Pith Number

pith:767IJXS2

pith:2025:767IJXS2XY2MSRAISQMBSKIHNC

not attested not anchored not stored refs pending

Biquadratic Tensors: Eigenvalues and Structured Tensors

Chunfeng Cui, Liqun Qi

arxiv:2502.06447 v2 · 2025-02-10 · math.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{767IJXS2XY2MSRAISQMBSKIHNC}

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

1 paper in Pith

Postive Semidefinite and Sum of Squares Biquadratic Polynomials

Receipt and verification

First computed	2026-07-05T10:22:12.984789Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ffbe84de5abe34c94408941819290768a3c075ae1899a69204d86200e5475c39

Aliases

arxiv: 2502.06447 · arxiv_version: 2502.06447v2 · doi: 10.48550/arxiv.2502.06447 · pith_short_12: 767IJXS2XY2M · pith_short_16: 767IJXS2XY2MSRAI · pith_short_8: 767IJXS2

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/767IJXS2XY2MSRAISQMBSKIHNC \
  | 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: ffbe84de5abe34c94408941819290768a3c075ae1899a69204d86200e5475c39

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "862f29b44a916bd8f0a9dc300399caf90d8b2e5c0b8ec2298c4196177727d1b8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SP",
    "submitted_at": "2025-02-10T13:25:03Z",
    "title_canon_sha256": "801d70ef26b6de3a251eb57b390fd886d604201d6c5cdd17a33c09a73adefd96"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.06447",
    "kind": "arxiv",
    "version": 2
  }
}