Pith Number

pith:VA56SWBT

pith:2012:VA56SWBT2NXK5O4TMZUVAEUBDM

not attested not anchored not stored refs pending

Stochastic Subspace Identification: Valid Model, Asymptotics and Model Error Bounds

Jeffrey T. Scruggs, Quan Li

arxiv:1212.5765 v2 · 2012-12-23 · cs.SY · math.OC

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

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	2026-05-18T00:43:09.956344Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a83be95833d36eaebb9366695012811b37f1f43a2412b24acb16757c3267ce51

Aliases

arxiv: 1212.5765 · arxiv_version: 1212.5765v2 · doi: 10.48550/arxiv.1212.5765 · pith_short_12: VA56SWBT2NXK · pith_short_16: VA56SWBT2NXK5O4T · pith_short_8: VA56SWBT

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/VA56SWBT2NXK5O4TMZUVAEUBDM \
  | 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: a83be95833d36eaebb9366695012811b37f1f43a2412b24acb16757c3267ce51

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f4289c6846e8c5ca0617e3e6c3f94bdc4a9b829065840128a05dce8fbf0d5d03",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2012-12-23T06:25:21Z",
    "title_canon_sha256": "e26d1dfef50f099789c3a9ee3d2cb7ee09d1a3bac7a3db565773613e1f2cda7e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.5765",
    "kind": "arxiv",
    "version": 2
  }
}