Pith Number

pith:DWQYFK3L

pith:2017:DWQYFK3L3BLVTIIDRK6OKRXVK4

not attested not anchored not stored refs pending

How to place an obstacle having a dihedral symmetry centered at a given point inside a disk so as to optimize the fundamental Dirichlet eigenvalue

Anisa M.H. Chorwadwala, Souvik Roy

arxiv:1707.01368 v3 · 2017-07-05 · 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{DWQYFK3L3BLVTIIDRK6OKRXVK4}

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	2026-05-18T00:11:32.519347Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1da182ab6bd85759a1038abce546f55720ffc4fca9f534650593108a4b4c98ed

Aliases

arxiv: 1707.01368 · arxiv_version: 1707.01368v3 · doi: 10.48550/arxiv.1707.01368 · pith_short_12: DWQYFK3L3BLV · pith_short_16: DWQYFK3L3BLVTIID · pith_short_8: DWQYFK3L

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/DWQYFK3L3BLVTIIDRK6OKRXVK4 \
  | 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: 1da182ab6bd85759a1038abce546f55720ffc4fca9f534650593108a4b4c98ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63fd2a6e195712e40d99d768260b1af922e6babef86717e7d415146f0ec86ea8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2017-07-05T12:44:20Z",
    "title_canon_sha256": "57812c744881589b83b4926ca644d6e2e65f273c397c461bdcbd58734d1dcd02"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.01368",
    "kind": "arxiv",
    "version": 3
  }
}