Pith Number

pith:WQZ4DYEG

pith:2016:WQZ4DYEGJQM2WHDJDWVPCSLWOQ

not attested not anchored not stored refs pending

Model Reduction for Systems with Inhomogeneous Initial Conditions

Christopher A. Beattie, Serkan Gugercin, Volker Mehrmann

arxiv:1610.03262 v2 · 2016-10-11 · cs.SY · math.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{WQZ4DYEGJQM2WHDJDWVPCSLWOQ}

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	2026-05-18T00:53:29.970048Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b433c1e0864c19ab1c691daaf14976743840d6f33b1e127722b434c1e7db33dc

Aliases

arxiv: 1610.03262 · arxiv_version: 1610.03262v2 · doi: 10.48550/arxiv.1610.03262 · pith_short_12: WQZ4DYEGJQM2 · pith_short_16: WQZ4DYEGJQM2WHDJ · pith_short_8: WQZ4DYEG

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/WQZ4DYEGJQM2WHDJDWVPCSLWOQ \
  | 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: b433c1e0864c19ab1c691daaf14976743840d6f33b1e127722b434c1e7db33dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "996e156a7e1f7364b39791e5b4516d67030b675738c2aecd947dfbba2d2d7b15",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2016-10-11T10:07:56Z",
    "title_canon_sha256": "81a5fdecba7123891486273c47d85de5841e3f8371a21e95bb8904ccc2b41f62"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1610.03262",
    "kind": "arxiv",
    "version": 2
  }
}