Pith Number

pith:DXYDAZKF

pith:2018:DXYDAZKFAURE6EQ7HTSJ4FKLZ3

not attested not anchored not stored refs pending

Odd order obstructions to the Hasse principle on general K3 surfaces

Anthony V\'arilly-Alvarado, Jennifer Berg

arxiv:1808.00879 v1 · 2018-08-02 · math.AG · math.NT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DXYDAZKFAURE6EQ7HTSJ4FKLZ3}

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	2026-05-18T00:09:01.145400Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1df030654505224f121f3ce49e154bceee36d04aa1167357c23345de074087ba

Aliases

arxiv: 1808.00879 · arxiv_version: 1808.00879v1 · doi: 10.48550/arxiv.1808.00879 · pith_short_12: DXYDAZKFAURE · pith_short_16: DXYDAZKFAURE6EQ7 · pith_short_8: DXYDAZKF

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/DXYDAZKFAURE6EQ7HTSJ4FKLZ3 \
  | 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: 1df030654505224f121f3ce49e154bceee36d04aa1167357c23345de074087ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5a18df6055eae74237d6b120f7587237ec2748238ee317da47bde72c4fe31a9",
    "cross_cats_sorted": [
      "math.NT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-08-02T16:01:57Z",
    "title_canon_sha256": "388cddd118deefdfaf0dfbcd2a422534d952333e6aa60d8c980a422f448e499c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.00879",
    "kind": "arxiv",
    "version": 1
  }
}