Pith Number

pith:HIWMW7LC

pith:2017:HIWMW7LCHN2UFMYYPOVK3VSDGM

not attested not anchored not stored refs pending

Spectral proper orthogonal decomposition and its relationship to dynamic mode decomposition and resolvent analysis

Aaron Towne, Oliver T. Schmidt, Tim Colonius

arxiv:1708.04393 v2 · 2017-08-15 · physics.flu-dyn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HIWMW7LCHN2UFMYYPOVK3VSDGM}

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	2026-05-18T00:14:22.404865Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a2ccb7d623b7542b3187baaadd643333dd464b7703f8f97d8ea7ec938b199c8

Aliases

arxiv: 1708.04393 · arxiv_version: 1708.04393v2 · doi: 10.48550/arxiv.1708.04393 · pith_short_12: HIWMW7LCHN2U · pith_short_16: HIWMW7LCHN2UFMYY · pith_short_8: HIWMW7LC

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/HIWMW7LCHN2UFMYYPOVK3VSDGM \
  | 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: 3a2ccb7d623b7542b3187baaadd643333dd464b7703f8f97d8ea7ec938b199c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53614cfcb43bc2cb8941ec2728eea185ed86d09eeb31414caa42fcbfee5f73ea",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2017-08-15T04:24:40Z",
    "title_canon_sha256": "ba3b5c3ffe24dfb372f28f1937358f8b17ba5d72c514932c49b2ec6fac1ce9ef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.04393",
    "kind": "arxiv",
    "version": 2
  }
}