Pith Number

pith:6ZFPW37D

pith:2015:6ZFPW37D24SSDKFYCWUAP3I6A6

not attested not anchored not stored refs pending

Doubly Nonnegative Tensors, Completely Positive Tensors and Applications

Liqun Qi, Ziyan Luo

arxiv:1504.07806 v12 · 2015-04-29 · 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{6ZFPW37D24SSDKFYCWUAP3I6A6}

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	2026-05-18T01:55:41.522935Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f64afb6fe3d72521a8b815a807ed1e07807b3c686044b66306de8ff538a6d6c5

Aliases

arxiv: 1504.07806 · arxiv_version: 1504.07806v12 · doi: 10.48550/arxiv.1504.07806 · pith_short_12: 6ZFPW37D24SS · pith_short_16: 6ZFPW37D24SSDKFY · pith_short_8: 6ZFPW37D

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/6ZFPW37D24SSDKFYCWUAP3I6A6 \
  | 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: f64afb6fe3d72521a8b815a807ed1e07807b3c686044b66306de8ff538a6d6c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "46f304bfba27ca6fca7dde5cde7e0888896998032946285c8e916207ae806fba",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SP",
    "submitted_at": "2015-04-29T10:54:05Z",
    "title_canon_sha256": "782de222783dbf0d322a64982a3f4b9c4fa1392c38866fadbac5fc8de2793b89"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.07806",
    "kind": "arxiv",
    "version": 12
  }
}