Pith Number

pith:ZYHLNW7C

pith:2019:ZYHLNW7CE2GRUO2ZDPRVMGBR2Q

not attested not anchored not stored refs pending

Modeling Symmetric Positive Definite Matrices with An Application to Functional Brain Connectivity

Dehan Kong, Qiang Sun, Zhenhua Lin

arxiv:1907.03385 v1 · 2019-07-08 · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZYHLNW7CE2GRUO2ZDPRVMGBR2Q}

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	2026-05-17T23:41:16.373987Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce0eb6dbe2268d1a3b591be3561831d4139bc43e4ddedf346e4b3eebe6da65a4

Aliases

arxiv: 1907.03385 · arxiv_version: 1907.03385v1 · doi: 10.48550/arxiv.1907.03385 · pith_short_12: ZYHLNW7CE2GR · pith_short_16: ZYHLNW7CE2GRUO2Z · pith_short_8: ZYHLNW7C

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/ZYHLNW7CE2GRUO2ZDPRVMGBR2Q \
  | 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: ce0eb6dbe2268d1a3b591be3561831d4139bc43e4ddedf346e4b3eebe6da65a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "edf2b1c150bda23b111c58c6d2fdbe8d30c628f55350edc00700dfa98192c842",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2019-07-08T02:28:39Z",
    "title_canon_sha256": "c04298f499ea0ccc1c6f4324e3160a817c129be9c3b46c9696d5bb90de67bc52"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.03385",
    "kind": "arxiv",
    "version": 1
  }
}