Pith Number

pith:SDJS5VGA

pith:2015:SDJS5VGATJP646LMD2L62Z5GCW

not attested not anchored not stored refs pending

State-space models' dirty little secrets: even simple linear Gaussian models can have estimation problems

Andrew E. Derocher, Chris Field, Christoffer M. Albertsen, Ian D. Jonsen, Joanna Mills Flemming, Marie Auger-M\'eth\'e, Mark A. Lewis

arxiv:1508.04325 v3 · 2015-08-18 · q-bio.QM · stat.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SDJS5VGATJP646LMD2L62Z5GCW}

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	2026-05-18T00:56:12.457561Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90d32ed4c09a5fee796c1e97ed67a615a493d1615b00101dce2cd7b49a9278d1

Aliases

arxiv: 1508.04325 · arxiv_version: 1508.04325v3 · doi: 10.48550/arxiv.1508.04325 · pith_short_12: SDJS5VGATJP6 · pith_short_16: SDJS5VGATJP646LM · pith_short_8: SDJS5VGA

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/SDJS5VGATJP646LMD2L62Z5GCW \
  | 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: 90d32ed4c09a5fee796c1e97ed67a615a493d1615b00101dce2cd7b49a9278d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "714435eb49712edb45a0a150d189e779bf110d8f196c026870a7c38ed1a1f4c2",
    "cross_cats_sorted": [
      "stat.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.QM",
    "submitted_at": "2015-08-18T14:10:49Z",
    "title_canon_sha256": "819b49d8c2655ea040ec4742249cf066a842a836e31ef7aee52c1fc66fe51e24"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.04325",
    "kind": "arxiv",
    "version": 3
  }
}