Pith Number

pith:537OYUOP

pith:2026:537OYUOPI7PZGIE2KXPQC2UXXS

not attested not anchored not stored refs pending

Optimal Sampling and Reconstruction of Graph Signals in the Fractional Fourier Domain

Xiaopeng Cheng, Yangfan He, Zhichao Zhang

arxiv:2607.15602 v1 · 2026-07-17 · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{537OYUOPI7PZGIE2KXPQC2UXXS}

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	2026-07-20T01:18:59.557711Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eefeec51cf47df93209a55df016a97bc83287e145d17b908ff14852ceea4b048

Aliases

arxiv: 2607.15602 · arxiv_version: 2607.15602v1 · doi: 10.48550/arxiv.2607.15602 · pith_short_12: 537OYUOPI7PZ · pith_short_16: 537OYUOPI7PZGIE2 · pith_short_8: 537OYUOP

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/537OYUOPI7PZGIE2KXPQC2UXXS \
  | 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: eefeec51cf47df93209a55df016a97bc83287e145d17b908ff14852ceea4b048

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b880131e27565d2fb0f4347dda358dce198c5b1cf29d01b6881c5abe7c6aeb60",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2026-07-17T03:56:20Z",
    "title_canon_sha256": "7fc26f4c67069aae7b07a22bda683a31a41586508459e0186907da64cbf024fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.15602",
    "kind": "arxiv",
    "version": 1
  }
}