Pith Number

pith:QHTKG7CK

pith:2015:QHTKG7CKH42YEXOTJMPRVRMHBD

not attested not anchored not stored refs pending

Fourier transform and regularity of characteristic functions

Hyerim Ko, Sanghyuk Lee

arxiv:1508.04218 v1 · 2015-08-18 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QHTKG7CKH42YEXOTJMPRVRMHBD}

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	2026-05-18T01:35:05.942818Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81e6a37c4a3f35825dd34b1f1ac58708f6b415647fe1b4f8b130cbb0ffda2784

Aliases

arxiv: 1508.04218 · arxiv_version: 1508.04218v1 · doi: 10.48550/arxiv.1508.04218 · pith_short_12: QHTKG7CKH42Y · pith_short_16: QHTKG7CKH42YEXOT · pith_short_8: QHTKG7CK

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/QHTKG7CKH42YEXOTJMPRVRMHBD \
  | 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: 81e6a37c4a3f35825dd34b1f1ac58708f6b415647fe1b4f8b130cbb0ffda2784

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f46c1d56538f2b629fd8e943b4f724c98cf95746d0f7054abd10f9631966b447",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2015-08-18T05:37:46Z",
    "title_canon_sha256": "0344fb071d1d4e3715fca9c8dc80276e98b3a12e8e579f4ea8e469502d1e79ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.04218",
    "kind": "arxiv",
    "version": 1
  }
}