Pith Number

pith:JQSFEROH

pith:2026:JQSFEROHOC3QA2KIF25ZVME6RB

not attested not anchored not stored refs pending

The Gompf $\theta$-Invariant of Canonical Contact Structures via Legendrian Surgery

Burak Ozbagci, Mohan Bhupal

arxiv:2605.21152 v1 · 2026-05-20 · math.GT · math.SG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JQSFEROHOC3QA2KIF25ZVME6RB}

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	2026-05-21T01:05:40.114027Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4c245245c770b70069482ebb9ab09e8867583491bd467d50dd2ab62bb35c086b

Aliases

arxiv: 2605.21152 · arxiv_version: 2605.21152v1 · doi: 10.48550/arxiv.2605.21152 · pith_short_12: JQSFEROHOC3Q · pith_short_16: JQSFEROHOC3QA2KI · pith_short_8: JQSFEROH

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/JQSFEROHOC3QA2KIF25ZVME6RB \
  | 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: 4c245245c770b70069482ebb9ab09e8867583491bd467d50dd2ab62bb35c086b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1477a491330d30c8dedb7a6d45c5360838815306012529083f67aae0ec021f20",
    "cross_cats_sorted": [
      "math.SG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2026-05-20T13:25:08Z",
    "title_canon_sha256": "e3a5ac51326e2df4107ea934d0e9f55c50301a1f1b29243a71898a518d89345c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.21152",
    "kind": "arxiv",
    "version": 1
  }
}