Pith Number

pith:SS4DMEM6

pith:2014:SS4DMEM6UHRHMN7LSEPU27Z7FV

not attested not anchored not stored refs pending

Model Reduction by Rational Interpolation

Christopher Beattie, Serkan Gugercin

arxiv:1409.2140 v1 · 2014-09-07 · math.NA · cs.NA · cs.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SS4DMEM6UHRHMN7LSEPU27Z7FV}

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	2026-05-18T02:42:38.802919Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

94b836119ea1e27637eb911f4d7f3f2d4f6af73d10c932957065283f37bfe28b

Aliases

arxiv: 1409.2140 · arxiv_version: 1409.2140v1 · doi: 10.48550/arxiv.1409.2140 · pith_short_12: SS4DMEM6UHRH · pith_short_16: SS4DMEM6UHRHMN7L · pith_short_8: SS4DMEM6

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/SS4DMEM6UHRHMN7LSEPU27Z7FV \
  | 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: 94b836119ea1e27637eb911f4d7f3f2d4f6af73d10c932957065283f37bfe28b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "58bf9fe55948176cedb752646cef67b8aed5be1627098de2fb881499727d1934",
    "cross_cats_sorted": [
      "cs.NA",
      "cs.SY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-09-07T17:13:19Z",
    "title_canon_sha256": "ff9edbbcfd2ea6ac6fbfc811335af3221c1d385650e4e1802f00a58129928125"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.2140",
    "kind": "arxiv",
    "version": 1
  }
}