Pith Number

pith:V4QQWTTB

pith:2019:V4QQWTTBSTB22DZDJJY6DITF6H

not attested not anchored not stored refs pending

Offline state estimation for hybrid systems via nonsmooth variable projection

Aleksandr Aravkin, Andrew M. Pace, Jize Zhang, Samuel A. Burden

arxiv:1905.09169 v1 · 2019-05-22 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{V4QQWTTBSTB22DZDJJY6DITF6H}

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	2026-05-17T23:45:21.779821Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af210b4e6194c3ad0f234a71e1a265f1c28d5fbb715be73b6f12b16e996b6ed5

Aliases

arxiv: 1905.09169 · arxiv_version: 1905.09169v1 · doi: 10.48550/arxiv.1905.09169 · pith_short_12: V4QQWTTBSTB2 · pith_short_16: V4QQWTTBSTB22DZD · pith_short_8: V4QQWTTB

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/V4QQWTTBSTB22DZDJJY6DITF6H \
  | 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: af210b4e6194c3ad0f234a71e1a265f1c28d5fbb715be73b6f12b16e996b6ed5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b893688723ffc33a3bbdd35dc26ed457649ceb7d5facfdafd7a0a080639eba44",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-05-22T14:31:19Z",
    "title_canon_sha256": "553422f16c4c66f82f5a917bf30383e2907fa48ca019198c4eb5dddea2c1acbd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.09169",
    "kind": "arxiv",
    "version": 1
  }
}