Pith Number

pith:XVSVTTUI

pith:2017:XVSVTTUIV2ODEGVFH5U4AQLTSH

not attested not anchored not stored refs pending

A detectability criterion and data assimilation for non-linear differential equations

Jason Frank, Sergiy Zhuk

arxiv:1711.05039 v1 · 2017-11-14 · math.DS · math.NA · math.OC · nlin.CD · physics.geo-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XVSVTTUIV2ODEGVFH5U4AQLTSH}

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	2026-05-18T00:30:35.073123Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd6559ce88ae9c321aa53f69c0417391e420b89002ff4032085db5531cca6686

Aliases

arxiv: 1711.05039 · arxiv_version: 1711.05039v1 · doi: 10.48550/arxiv.1711.05039 · pith_short_12: XVSVTTUIV2OD · pith_short_16: XVSVTTUIV2ODEGVF · pith_short_8: XVSVTTUI

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/XVSVTTUIV2ODEGVFH5U4AQLTSH \
  | 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: bd6559ce88ae9c321aa53f69c0417391e420b89002ff4032085db5531cca6686

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87ad6184f08f99a28da8cc514b09838b98778ec4c888dd812ca9734523694a28",
    "cross_cats_sorted": [
      "math.NA",
      "math.OC",
      "nlin.CD",
      "physics.geo-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2017-11-14T10:15:50Z",
    "title_canon_sha256": "900c190d996e275e031c70014612031784802fa64e4741690846c6f2507ab8c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.05039",
    "kind": "arxiv",
    "version": 1
  }
}