Pith Number

pith:BMDWW4PW

pith:2016:BMDWW4PWB4JTNJHMF5S4GVTPUV

not attested not anchored not stored refs pending

On (conditional) positive semidefiniteness in a matrix-valued context

Fritz Gesztesy, Michael Pang

arxiv:1602.00384 v3 · 2016-02-01 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BMDWW4PWB4JTNJHMF5S4GVTPUV}

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	2026-05-18T00:52:17.572244Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0b076b71f60f1336a4ec2f65c3566fa550c06daaebe7c0a84a3f8825a4dec471

Aliases

arxiv: 1602.00384 · arxiv_version: 1602.00384v3 · doi: 10.48550/arxiv.1602.00384 · pith_short_12: BMDWW4PWB4JT · pith_short_16: BMDWW4PWB4JTNJHM · pith_short_8: BMDWW4PW

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/BMDWW4PWB4JTNJHMF5S4GVTPUV \
  | 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: 0b076b71f60f1336a4ec2f65c3566fa550c06daaebe7c0a84a3f8825a4dec471

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0424e9780335bcbe7aa3e5f3c54bcdc10b2b09b4c503151b74f625eab233336f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2016-02-01T03:53:03Z",
    "title_canon_sha256": "11e623257b3bce60cfbd55286f61f2f090baef7694d1f4d8d9647b4a4ce593a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.00384",
    "kind": "arxiv",
    "version": 3
  }
}