Pith Number

pith:Q3OONT6V

pith:2020:Q3OONT6VHJ436P22WXUFWTH5AG

not attested not anchored not stored refs pending

State Estimation -- The Role of Reduced Models

Albert Cohen, Ron DeVore, Wolfgang Dahmen

arxiv:2002.00220 v1 · 2020-02-01 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q3OONT6VHJ436P22WXUFWTH5AG}

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	2026-07-05T00:37:52.789593Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86dce6cfd53a79bf3f5ab5e85b4cfd01af288bb61c7579091ee88c4a15719902

Aliases

arxiv: 2002.00220 · arxiv_version: 2002.00220v1 · doi: 10.48550/arxiv.2002.00220 · pith_short_12: Q3OONT6VHJ43 · pith_short_16: Q3OONT6VHJ436P22 · pith_short_8: Q3OONT6V

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/Q3OONT6VHJ436P22WXUFWTH5AG \
  | 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: 86dce6cfd53a79bf3f5ab5e85b4cfd01af288bb61c7579091ee88c4a15719902

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c41b40d1f5edf6cd315ce36034e0f72b65768f692ecc67c4304cf591f6d3e851",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2020-02-01T14:33:40Z",
    "title_canon_sha256": "7246f6df505c86a9681fa26fa2888081534b39518304b9ed347b4827e07fe1e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.00220",
    "kind": "arxiv",
    "version": 1
  }
}