Pith Number

pith:2UQYIARS

pith:2016:2UQYIARSZVECDLLXMXTWA47FEH

not attested not anchored not stored refs pending

A HSS Matrix-Inspired Butterfly-Based Direct Solver for Analyzing Scattering from Two-dimensional Objects

Eric Michielssen, Han Guo, Yang Liu

arxiv:1608.01235 v1 · 2016-08-03 · math.NA · physics.comp-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{2UQYIARSZVECDLLXMXTWA47FEH}

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	2026-05-18T00:43:02.511191Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d521840232cd4821ad7765e76073e521f1dc8d5927380e1b66a5a54ab07296e3

Aliases

arxiv: 1608.01235 · arxiv_version: 1608.01235v1 · doi: 10.48550/arxiv.1608.01235 · pith_short_12: 2UQYIARSZVEC · pith_short_16: 2UQYIARSZVECDLLX · pith_short_8: 2UQYIARS

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/2UQYIARSZVECDLLXMXTWA47FEH \
  | 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: d521840232cd4821ad7765e76073e521f1dc8d5927380e1b66a5a54ab07296e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e65eb417e40ead06dde90ad0b6ae931edd16857c2f7402aaa8c9d8b8f5f2301",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2016-08-03T16:06:34Z",
    "title_canon_sha256": "cc8838dc1af4af4c62bd256a8adbfa486e33f81bd4a159539c7d3d75fb980362"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.01235",
    "kind": "arxiv",
    "version": 1
  }
}