Pith Number

pith:L7LRD2LK

pith:2016:L7LRD2LKR56JBFJQQBVZJDLLSJ

not attested not anchored not stored refs pending

Approximate fast graph Fourier transforms via multi-layer sparse approximations

GIPSA-CICS), Luc Le Magoarou (PANAMA), Nicolas Tremblay (Phys-ENS, R\'emi Gribonval (PANAMA)

arxiv:1612.04542 v3 · 2016-12-14 · cs.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{L7LRD2LKR56JBFJQQBVZJDLLSJ}

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	2026-05-18T00:42:17.561070Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5fd711e96a8f7c909530806b948d6b92497df026d0e00533c9dd6409545edfaf

Aliases

arxiv: 1612.04542 · arxiv_version: 1612.04542v3 · doi: 10.48550/arxiv.1612.04542 · pith_short_12: L7LRD2LKR56J · pith_short_16: L7LRD2LKR56JBFJQ · pith_short_8: L7LRD2LK

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/L7LRD2LKR56JBFJQQBVZJDLLSJ \
  | 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: 5fd711e96a8f7c909530806b948d6b92497df026d0e00533c9dd6409545edfaf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "46d5c3a557c888af765f9299feffd4a31c85a52a97c8b12f3850807167adde5e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2016-12-14T09:09:16Z",
    "title_canon_sha256": "46051ef50b1ba6aacfcd260739c7dfeac44a466f79a81b1bbafc2f85b40d2aed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.04542",
    "kind": "arxiv",
    "version": 3
  }
}