Pith Number

pith:SIRQMC4A

pith:2018:SIRQMC4ASXW6WLVQOBXLQIHBAP

not attested not anchored not stored refs pending

On Calabi's extremal metric and properness

Weiyong He

arxiv:1801.07636 v1 · 2018-01-23 · math.DG · 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{SIRQMC4ASXW6WLVQOBXLQIHBAP}

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	2026-05-18T00:25:12.382443Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9223060b8095edeb2eb0706eb820e103f6386eede6dd265c64cff41343eaee0b

Aliases

arxiv: 1801.07636 · arxiv_version: 1801.07636v1 · doi: 10.48550/arxiv.1801.07636 · pith_short_12: SIRQMC4ASXW6 · pith_short_16: SIRQMC4ASXW6WLVQ · pith_short_8: SIRQMC4A

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/SIRQMC4ASXW6WLVQOBXLQIHBAP \
  | 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: 9223060b8095edeb2eb0706eb820e103f6386eede6dd265c64cff41343eaee0b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d5df16e10e4f276379c50b68e483c4391a7fab5f2c170e9b5868869dc14b20d",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-01-23T16:16:59Z",
    "title_canon_sha256": "f6a75d2cd6e20d99682b55bb942c48159597e2c28ddfe0af7c66cd414c8a2d20"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.07636",
    "kind": "arxiv",
    "version": 1
  }
}