Pith Number

pith:WQ4KCHFM

pith:2015:WQ4KCHFMX5FJXJ5X6BX2NQUIMK

not attested not anchored not stored refs pending

The shifted proper orthogonal decomposition: A mode decomposition for multiple transport phenomena

J\"orn Sesterhenn, Julius Reiss, Philipp Schulze, Volker Mehrmann

arxiv:1512.01985 v3 · 2015-12-07 · 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{WQ4KCHFMX5FJXJ5X6BX2NQUIMK}

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	2026-05-18T00:23:09.622636Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b438a11cacbf4a9ba7b7f06fa6c28862b7b4af97f727390ef71e97d9090b347c

Aliases

arxiv: 1512.01985 · arxiv_version: 1512.01985v3 · doi: 10.48550/arxiv.1512.01985 · pith_short_12: WQ4KCHFMX5FJ · pith_short_16: WQ4KCHFMX5FJXJ5X · pith_short_8: WQ4KCHFM

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/WQ4KCHFMX5FJXJ5X6BX2NQUIMK \
  | 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: b438a11cacbf4a9ba7b7f06fa6c28862b7b4af97f727390ef71e97d9090b347c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d73166ab916de4d6c172221a548cf2f2df7fdd0815f0287e681c75bda075184c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-12-07T11:20:36Z",
    "title_canon_sha256": "6f961f7e2dfa05778126da61a47c173638f25dbabe0841f080efcaaf867de1b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.01985",
    "kind": "arxiv",
    "version": 3
  }
}