Pith Number

pith:UU34ZSI3

pith:2013:UU34ZSI3YX26QVEM4CLEXABXGP

not attested not anchored not stored refs pending

A Tractable State-Space Model for Symmetric Positive-Definite Matrices

Carlos M. Carvalho, Jesse Windle

arxiv:1310.5951 v2 · 2013-10-22 · 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{UU34ZSI3YX26QVEM4CLEXABXGP}

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	2026-05-18T03:04:06.211875Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a537ccc91bc5f5e8548ce0964b803733c90b643599706a1f553e7533f6a35518

Aliases

arxiv: 1310.5951 · arxiv_version: 1310.5951v2 · doi: 10.48550/arxiv.1310.5951 · pith_short_12: UU34ZSI3YX26 · pith_short_16: UU34ZSI3YX26QVEM · pith_short_8: UU34ZSI3

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/UU34ZSI3YX26QVEM4CLEXABXGP \
  | 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: a537ccc91bc5f5e8548ce0964b803733c90b643599706a1f553e7533f6a35518

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f1b814970f762d95b01647b96fec809b90edd10e651fc169520e73de420063b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2013-10-22T15:12:42Z",
    "title_canon_sha256": "7c2b21ed290336c17de2aa204f899670cb73db470c9e9f86a4c6eba8faa4a164"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.5951",
    "kind": "arxiv",
    "version": 2
  }
}