Pith Number

pith:QYQYIAXY

pith:2018:QYQYIAXYL2B2VWPKBHPWSLGTNI

not attested not anchored not stored refs pending

The CR geometry of weighted extremal Kahler and Sasaki metrics

David M. J. Calderbank, Vestislav Apostolov

arxiv:1810.10618 v2 · 2018-10-24 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QYQYIAXYL2B2VWPKBHPWSLGTNI}

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	2026-05-17T23:56:58.146780Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86218402f85e83aad9ea09df692cd36a38b5222ebfd6d201ce5cf69cbe7d4d48

Aliases

arxiv: 1810.10618 · arxiv_version: 1810.10618v2 · doi: 10.48550/arxiv.1810.10618 · pith_short_12: QYQYIAXYL2B2 · pith_short_16: QYQYIAXYL2B2VWPK · pith_short_8: QYQYIAXY

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/QYQYIAXYL2B2VWPKBHPWSLGTNI \
  | 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: 86218402f85e83aad9ea09df692cd36a38b5222ebfd6d201ce5cf69cbe7d4d48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e0aeeaf6838dc7605c14ff7755ec07eb780725be49ea97d50fa8e361324bd0b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-10-24T21:08:13Z",
    "title_canon_sha256": "53803e07431e7ee810a00a049e2e720ca8386263caa15b624770ef587c7ee848"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.10618",
    "kind": "arxiv",
    "version": 2
  }
}