Pith Number

pith:HBKUQJE6

pith:2025:HBKUQJE6XSADPJWWAQBHGGDCD4

not attested not anchored not stored refs pending

A Fox-Neuwirth Basis for the Sinha Spectral Sequence

Andrea Marino

arxiv:2505.22958 v1 · 2025-05-29 · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HBKUQJE6XSADPJWWAQBHGGDCD4}

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	2026-07-05T11:11:52.765890Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

385548249ebc8037a6d604027318621f0b4114e5ae23e7f25424b42826634079

Aliases

arxiv: 2505.22958 · arxiv_version: 2505.22958v1 · doi: 10.48550/arxiv.2505.22958 · pith_short_12: HBKUQJE6XSAD · pith_short_16: HBKUQJE6XSADPJWW · pith_short_8: HBKUQJE6

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/HBKUQJE6XSADPJWWAQBHGGDCD4 \
  | 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: 385548249ebc8037a6d604027318621f0b4114e5ae23e7f25424b42826634079

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f27ce9bedd799652fbab0d924df6acb697f92c100ae9745d8dbd98dc962ddd8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2025-05-29T00:51:18Z",
    "title_canon_sha256": "7c5929ed8517341d631cba117839721f82428b7a74a6d8854cc98b3a2641802d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.22958",
    "kind": "arxiv",
    "version": 1
  }
}