Pith Number

pith:64TNOYS6

pith:2026:64TNOYS63UU434W7SQP6PBYT5B

not attested not anchored not stored refs pending

Concavity and hot spots in elliptic problems under mixed boundary conditions

Dorin Bucur, Ilaria Fragal\`a

arxiv:2606.13029 v1 · 2026-06-11 · 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{64TNOYS63UU434W7SQP6PBYT5B}

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	2026-06-12T01:09:37.619584Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f726d7625edd29cdf2df941fe78713e86fda0587d7fa76d8d6466868c98c2e91

Aliases

arxiv: 2606.13029 · arxiv_version: 2606.13029v1 · doi: 10.48550/arxiv.2606.13029 · pith_short_12: 64TNOYS63UU4 · pith_short_16: 64TNOYS63UU434W7 · pith_short_8: 64TNOYS6

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/64TNOYS63UU434W7SQP6PBYT5B \
  | 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: f726d7625edd29cdf2df941fe78713e86fda0587d7fa76d8d6466868c98c2e91

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eef28c3b237e633c641d4ee38b1162766bcee65a749de1584d342632ad485b5c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2026-06-11T08:02:33Z",
    "title_canon_sha256": "a105f12fff3c502ad6db30f25cbca4f054bde9d11496d3e6bb1624a7632ead9b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.13029",
    "kind": "arxiv",
    "version": 1
  }
}