Pith Number

pith:LLPF256A

pith:2018:LLPF256ABMK4FSWZHJXCMUJK67

not attested not anchored not stored refs pending

Correcting Observation Model Error in Data Assimilation

Franz Hamilton, Timothy Sauer, Tyrus Berry

arxiv:1803.06918 v1 · 2018-03-14 · math.DS · physics.data-an

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LLPF256ABMK4FSWZHJXCMUJK67}

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	2026-05-17T23:45:38.787429Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5ade5d77c00b15c2cad93a6e26512af7fa4a04c031db9f41e3fc19193231ac3a

Aliases

arxiv: 1803.06918 · arxiv_version: 1803.06918v1 · doi: 10.48550/arxiv.1803.06918 · pith_short_12: LLPF256ABMK4 · pith_short_16: LLPF256ABMK4FSWZ · pith_short_8: LLPF256A

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/LLPF256ABMK4FSWZHJXCMUJK67 \
  | 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: 5ade5d77c00b15c2cad93a6e26512af7fa4a04c031db9f41e3fc19193231ac3a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "930abf25c243497623f37c9325dc9f36df7f2bbc293a2e8806d72ca21bbf3fce",
    "cross_cats_sorted": [
      "physics.data-an"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2018-03-14T03:39:04Z",
    "title_canon_sha256": "7cee49bb94ad7d29634d26df7e91cf03aaea184d550d3f46291965515cea8d1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.06918",
    "kind": "arxiv",
    "version": 1
  }
}