Pith Number

pith:G6QLKRCY

pith:2015:G6QLKRCYL6IPFVAMG3GP7BWPAY

not attested not anchored not stored refs pending

Positive Maps and Separable Matrices

Jiawang Nie, Xinzhen Zhang

arxiv:1504.06595 v2 · 2015-04-24 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{G6QLKRCYL6IPFVAMG3GP7BWPAY}

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	2026-05-18T01:18:14.648047Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

37a0b544585f90f2d40c36ccff86cf0618f125a4e985501f000b57f6b1ec63e8

Aliases

arxiv: 1504.06595 · arxiv_version: 1504.06595v2 · doi: 10.48550/arxiv.1504.06595 · pith_short_12: G6QLKRCYL6IP · pith_short_16: G6QLKRCYL6IPFVAM · pith_short_8: G6QLKRCY

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/G6QLKRCYL6IPFVAMG3GP7BWPAY \
  | 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: 37a0b544585f90f2d40c36ccff86cf0618f125a4e985501f000b57f6b1ec63e8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de7cf4159b04405f31eebca6641e231ba505cc2b55acf6b2f38ab0ba272e7cfc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2015-04-24T18:43:30Z",
    "title_canon_sha256": "1f3c23482656bd1a502ae88012c81151e23c4ced7ee2dfd77ed6a1b8ff16e1d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.06595",
    "kind": "arxiv",
    "version": 2
  }
}